Question 1

Multiply.
--3 ·(-7) ·(-9) ·10 ·(-9)

Accepted Answer

When multiplying an odd number of negative numbers together, the result is negative. However, in this case, there are three negative numbers, making the product negative, but the final multiplication by 10 and -9 results in a positive product. The calculation is -3 * -7 * -9 * 10 * -9 = 17,010.

Question 2

Solve the problem.
-Nikki is fishing from a bank 13 feet above water level. In this location, the fish tend to feed at 20 feet below the surface. How long must Nikki's fish line be to reach the fish?

Accepted Answer

To reach the fish, Nikki's line must extend 13 feet down to the water level and an additional 20 feet below the surface, totaling 33 feet.

Question 3

Multiply.
--20 · (-20)

Accepted Answer

When you multiply two negative numbers, the result is positive. Therefore, -20 multiplied by -20 equals 400.

Question 4

Multiply.
--16 · (-6)

Accepted Answer

When you multiply two negative numbers, the result is positive. Thus, -16 multiplied by -6 equals 96.

Question 5

Multiply.
-7 ·(-3) ·12 ·(-8)

Accepted Answer

The answer of Multiply.
-7 ·(-3) ·12 ·(-8)
...

Question 6

Solve the problem.
-Company A showed a profit of $66,470 last year, while Company B had a loss of $88,850. Find the difference between these amounts.

Accepted Answer

The difference between Company A's profit and Company B's loss is $66,470 - (-$88,850) = $66,470 + $88,850 = $155,320.

Question 7

Solve the problem.
-In a certain location, the highest temperature recorded was 102°F. The lowest temperature recorded was 124 degrees less than the highest. What was the lowest temperature?

Accepted Answer

The lowest temperature is 124 degrees less than the highest temperature of 102°F. So, 102°F - 124°F = -22°F.

Question 8

Multiply.
-10 ·(-9) ·(-17)

Accepted Answer

When multiplying numbers, two negatives make a positive, so (-9) * (-17) = 153, and then 153 * 10 = 1530.

Question 9

Solve the problem.
-The two charts show the weight gain of some people and the weight loss of other people. Use the information given to answer the question below.  What is the difference between the weight gain of Bob and the weight loss of Ed?

Accepted Answer

The answer of Solve the problem.
-The two charts show the...

Question 10

Solve the problem.
-After one round in a card game, your score was -13 points. After the second round, your score was 36 points. How many points did you gain in the second game?

Accepted Answer

To find the points gained in the second game, subtract the score after the first round from the score after the second round: 36 - (-13) = 36 + 13 = 49 points.

Question 11

Solve the problem.
-Wayne has $26.72 in his wallet. Janice has a debt note for $30.45 in her wallet. Find the difference between these amounts.

Accepted Answer

The difference between $26.72 and $30.45 is $3.73.

Question 12

Simplify.
-

Accepted Answer

The answer of Simplify.
-
...

Question 13

Solve the problem.
-The ocean surface is at 0 ft elevation. A diver is underwater at an elevation of -175 ft near a rock formation. In this area, the ocean floor has an elevation of -296 ft. The rock formation rises to a peak 222 ft above the ocean
Floor. How many feet below the top of the rock formation is the diver?

Accepted Answer

The answer of Solve the problem.
-The ocean surface is at...

Question 14

Solve the problem.
-The stock market gained 6 points on Tuesday and lost 49 points on Wednesday. Find the difference between these changes.

Accepted Answer

The difference between gaining 6 points and losing 49 points is 55 points (49 - 6 = 55).

Question 15

Multiply.
-5 ·(-4) ·7 ·(-7) ·3 ·(-4) ·(-6)

Accepted Answer

The product of an even number of negative numbers is positive, and multiplying the absolute values gives 5 * 4 * 7 * 7 * 3 * 4 * 6 = 70,560.

Question 16

Simplify.
-

Accepted Answer

The answer of Simplify.
-
...

Question 17

Multiply.
--10 ·4

Accepted Answer

When multiplying a negative number by a positive number, the result is negative. Therefore, -10 multiplied by 4 equals -40.

Question 18

Multiply.
-8 ·(-4)

Accepted Answer

When multiplying a positive number by a negative number, the result is negative. Thus, 8 multiplied by -4 equals -32.

Question 19

Simplify.
-

Accepted Answer

The answer of Simplify.
-
...

Question 20

Solve the problem.
-The temperature at the South pole was -10° at 8 am. At 3 pm, it was 22°. By how many degrees did the temperature rise?

Accepted Answer

The temperature rose from -10° to 22°, which is a difference of 32° (22 - (-10) = 32).

Quiz 2: Introduction to Real Numbers and Algebraic Expressions

Multiply. --3 ·(-7) ·(-9) ·10 ·(-9)

Solve the problem. -Nikki is fishing from a bank 13 feet above water level. In this location, the fish tend to feed at 20 feet below the surface. How long must Nikki's fish line be to reach the fish?

Multiply. --20 · (-20)

Multiply. --16 · (-6)

Multiply. -7 ·(-3) ·12 ·(-8)

Solve the problem. -Company A showed a profit of $66,470 last year, while Company B had a loss of $88,850. Find the difference between these amounts.

Solve the problem. -In a certain location, the highest temperature recorded was 102°F. The lowest temperature recorded was 124 degrees less than the highest. What was the lowest temperature?

Multiply. -10 ·(-9) ·(-17)

Solve the problem. -The two charts show the weight gain of some people and the weight loss of other people. Use the information given to answer the question below. What is the difference between the weight gain of Bob and the weight loss of Ed?

Solve the problem. -After one round in a card game, your score was -13 points. After the second round, your score was 36 points. How many points did you gain in the second game?

Solve the problem. -Wayne has $26.72 in his wallet. Janice has a debt note for $30.45 in her wallet. Find the difference between these amounts.

Simplify. -

Solve the problem. -The stock market gained 6 points on Tuesday and lost 49 points on Wednesday. Find the difference between these changes.

Multiply. -5 ·(-4) ·7 ·(-7) ·3 ·(-4) ·(-6)

Simplify. -

Multiply. --10 ·4

Multiply. -8 ·(-4)

Simplify. -

Solve the problem. -The temperature at the South pole was -10° at 8 am. At 3 pm, it was 22°. By how many degrees did the temperature rise?