Question

Jerome ordered some CDs and DVDs online. He bought 2 CDs and 5 DVDs. He spent a total of $138.45.

Part 1: Write the equation for this word problem. Be sure to identify your variables.

Part 2: If each CD cost $14.25, solve the equation to find the cost of each DVD. Show your work.

Answer 1

let x be CDs and y be DVDs
2x + 5y = 138.45
plug in the cost of the CDs for x
2(14.25) + 5y = 138.45
multiply
28.50 + 5y = 138.45
subtract 28.50 from both sides to isolate y
5y = 109.95
divide both sides by 5 to isolate y
y = 21.99

to check if the answer is correct plug in your answer <3

Answer 2

Answer:gchckc

Explanation: