Consider the two stories below.
a. the initial freshman class at a college is 10% smaller than last year’s class. then during the first
week of classes, 20 more freshman students enroll. after the first week of classes, there are 830
students in the freshman class.
b. a store reduces the price of a computer by $20. then during a 10% off sale, a customer pays
$830 for the computer, without sales tax.
for each equation below, decide which story matches the equation. then solve the equation and explain
what your solution represents in the story.
1. 0.9x + 20 = 830

2. 0.9 (x=20) = 830