Question 1

Translate the phrase to an algebraic expression.
-Four multiplied by x

Accepted Answer

A

Question 2

Translate the phrase to an algebraic expression.
-Four more than x

Accepted Answer

A

Question 3

Evaluate.
- , when x = 12 and y = 20

Accepted Answer

C

Question 4

Evaluate.
-x + y, when x = 6 and y = 2

Accepted Answer

The expression x + y evaluates to 6 + 2, which equals 8.

Question 5

Evaluate.
- when x = 13 and y = 47

Accepted Answer

The answer of Evaluate.
- when x = 13 and y...

Question 6

Evaluate.
- , when m = 12 and n = 3

Accepted Answer

The answer of Evaluate.
- , when m = 12 and...

Question 7

Translate the phrase to an algebraic expression.
-x increased by six

Accepted Answer

"Increased by" means to add. Therefore, "x increased by six" can be written as "x + 6".

Question 8

Substitute to find the value of the expression.
-A plane flies at 649 miles per hour. The time, in hours, for the plane to travel a distance of d miles is  How long will it take for the plane to travel 3245 miles?

Accepted Answer

The answer of Substitute to find the value of the...

Question 9

Substitute to find the value of the expression.
-Bill takes four times as long to do a job as Jose. Suppose t represents the time it takes Bill to do the job. Then t/4 represents the time it takes Jose. How long does it take Jose if it takes Bill 90 minutes?

Accepted Answer

Given that t represents the time it takes Bill to do the job, and it's given that Bill takes 90 minutes, we substitute t with 90 in the expression for Jose's time, t/4. Therefore, Jose takes 90/4 = 22.50 minutes.

Question 10

Substitute to find the value of the expression.
-In one store, bananas cost 60 cents per pound. The cost, in dollars, of x pounds of bananas is 0.6x. What is the cost of 2.0 pounds of bananas?

Accepted Answer

The cost of bananas is calculated as 0.6x dollars, where x is the weight in pounds. For 2.0 pounds, the cost is 0.6 * 2.0 = $1.20.

Question 11

Substitute to find the value of the expression.
-A train must cover a distance of 2140 miles. The velocity, in miles per hour, of the train is  where t is the time, in hours, to complete the trip. If the train completes the trip in 20 hours, what is its velocity?

Accepted Answer

The answer of Substitute to find the value of the...

Question 12

Substitute to find the value of the expression.
-The area of a triangle with base b and height h is given by the formula  . Find the area of a triangle when the base is 3.4 centimeters and the height is 5.5 centimeters.

Accepted Answer

The answer of Substitute to find the value of the...

Question 13

Translate the phrase to an algebraic expression.
-x subtracted from y

Accepted Answer

The answer of Translate the phrase to an algebraic expression.
-x...

Question 14

Evaluate.
- , when p = 14 and q = 2

Accepted Answer

The answer of Evaluate.
- , when p = 14 and...

Question 15

Translate the phrase to an algebraic expression.
-Six times x

Accepted Answer

The answer of Translate the phrase to an algebraic expression.
-Six...

Question 16

Substitute to find the value of the expression.
-Mary earns three times as much per week as Maureen. If x represents the amount that Maureen earns per week, then 3x represents the amount that Mary earns per week. How much does Mary earn per week if Maureen
Earns $380 per week?

Accepted Answer

Since Maureen earns $380 per week and Mary earns three times as much, Mary earns 3 * $380 = $1140 per week.

Question 17

Substitute to find the value of the expression.
-Traveling at r kilometers per hour for t hours, a driver will travel rt kilometers. How far will Danny travel in 10 hours at a speed of 79 kilometers per hour?

Accepted Answer

Using the formula for distance traveled, $d = rt$, where $r = 79$ km/h and $t = 10$ hours, we find $d = 79 \times 10 = 790$ km.

Question 18

Translate the phrase to an algebraic expression.
-The quotient of x divided by eight

Accepted Answer

The answer of Translate the phrase to an algebraic expression.
-The...

Question 19

Evaluate.
-5x, when x = 4

Accepted Answer

To evaluate 5x when x = 4, you multiply 5 by 4, which equals 20.

Question 20

Translate the phrase to an algebraic expression.
-Three less than x

Accepted Answer

The answer of Translate the phrase to an algebraic expression.
-Three...

Quiz 2: Introduction to Real Numbers and Algebraic Expressions

Translate the phrase to an algebraic expression. -Four multiplied by x

Translate the phrase to an algebraic expression. -Four more than x

Evaluate. - , when x = 12 and y = 20

Evaluate. -x + y, when x = 6 and y = 2

Evaluate. - when x = 13 and y = 47

Evaluate. - , when m = 12 and n = 3

Translate the phrase to an algebraic expression. -x increased by six

Substitute to find the value of the expression. -A plane flies at 649 miles per hour. The time, in hours, for the plane to travel a distance of d miles is How long will it take for the plane to travel 3245 miles?

Substitute to find the value of the expression. -Bill takes four times as long to do a job as Jose. Suppose t represents the time it takes Bill to do the job. Then t/4 represents the time it takes Jose. How long does it take Jose if it takes Bill 90 minutes?

Substitute to find the value of the expression. -In one store, bananas cost 60 cents per pound. The cost, in dollars, of x pounds of bananas is 0.6x. What is the cost of 2.0 pounds of bananas?

Substitute to find the value of the expression. -A train must cover a distance of 2140 miles. The velocity, in miles per hour, of the train is where t is the time, in hours, to complete the trip. If the train completes the trip in 20 hours, what is its velocity?

Substitute to find the value of the expression. -The area of a triangle with base b and height h is given by the formula . Find the area of a triangle when the base is 3.4 centimeters and the height is 5.5 centimeters.

Translate the phrase to an algebraic expression. -x subtracted from y

Evaluate. - , when p = 14 and q = 2

Translate the phrase to an algebraic expression. -Six times x

Substitute to find the value of the expression. -Mary earns three times as much per week as Maureen. If x represents the amount that Maureen earns per week, then 3x represents the amount that Mary earns per week. How much does Mary earn per week if Maureen Earns $380 per week?

Substitute to find the value of the expression. -Traveling at r kilometers per hour for t hours, a driver will travel rt kilometers. How far will Danny travel in 10 hours at a speed of 79 kilometers per hour?

Translate the phrase to an algebraic expression. -The quotient of x divided by eight

Evaluate. -5x, when x = 4

Translate the phrase to an algebraic expression. -Three less than x