derek has $20 to spend on used books. hardcover books cost $5 each and paperbacks cost $2 each. complete the…
derek has $20 to spend on used books. hardcover books cost $5 each and paperbacks cost $2 each. complete the equation which determines the number x of hardcover books and the number y of paperback books he can buy. choose... x + choose... y = choose...
Answer
Explanation:
Step1: Calculate cost of hardcover books
The cost of each hard - cover book is $5 and the number of hard - cover books is $x$, so the total cost of hard - cover books is $5x$.
Step2: Calculate cost of paperback books
The cost of each paperback book is $2 and the number of paperback books is $y$, so the total cost of paperback books is $2y$.
Step3: Set up the equation
Derek has $20 to spend. The sum of the cost of hard - cover books and paperback books should equal 20. So the equation is $5x + 2y=20$.
Answer:
$5x + 2y = 20$