work. Do not solve.
-5x + 9y = -12
-4x - 4y = -32
A) Substitution B) Addition
Answer: B
Write the word or phrase that best completes each statement or answers the question.
-A woman made a deposit of $278. If her deposit consisted of 74 bills, some of them one-dollar bills and the rest being five-dollar bills, how many one-dollar bills did she deposit?
A) 18 one-dollar bills
B) 23 one-dollar bills
C) 13 one-dollar bills
D) 51 one-dollar bills

Question

Quizplus · Accepted Answer

The system of equations can be solved by addition (or elimination) method by multiplying one or both equations to make the coefficients of one of the variables opposite, then adding the equations to eliminate that variable.DLet x be the number of one-dollar bills and y be the number of five-dollar bills. The system of equations would be x + y = 74 (total bills) and x + 5y = 278 (total amount). Solving this system, you find that x, the number of one-dollar bills, is 51.

Work. Do Not Solve