Question

Derek has $20 to spend on used books. Hardcover books cost $5 each and paperbacks cost $2 each. What equation in standard form determines the number "x" of hardcover books and the number "y" of paperback books he can buy?

5x+2y=20

2x−5y=20

5x−2y=20

2x+5y=20

Answer 1

5x + 2y = 20