Solve the problem.
-x represents the number of textbooks purchased at $30 per book, and y represents the total amount ofmoney spent on textbooks. After writing an equation for this situation, what is the cost of 3 textbooks?
A)$90
B)$180
C)$45.00
D)$10.00

Question

Quizplus · Accepted Answer

The equation for this situation is y = 30x. Substituting x = 3 (for 3 textbooks), we get y = 30*3 = $90.

Solve the Problem. -X Represents the Number of Textbooks Purchased at $30 Per