SAT question c039b198 (Linear Functions)

Question

A computer company pays customers for trading in old computers. The payment $p$ , in dollars, is the original retail price of a computer minus $ $150$ for each year since the computer was released. Which equation represents this situation for a computer with an original retail price of $ $690$ when it was released $t$ years ago, where $t$ is a whole number and $1 \leq t \leq 4$ ?

138

Difficulty:Easy

A

$p = 150 - 690 t$

B

$p = 690 - 150 t$

C

$t = 150 - 690 p$

D

$t = 690 - 150 p$

College Board · Accepted Answer

The correct answer is B. Choice B is correct. It’s given that the payment p , in dollars, for trading in an old computer is the original retail price of the computer minus $ 150 for each year since the computer was released t years ago. It's also given that the original retail price of a computer was $ 690 . Thus, the equation that represents this situation is p = 690 − 150 t .

Explanation

Why the other choices are wrong

SAT Question c039b198: Linear Functions answer and explanation with Desmos solution

Explanation

Why the other choices are wrong