Identify the corresponding word problem given the equation: x - 9.2 = 12.8 a) nick ran 9.2 miles less than perry last week. if nick ran 22 miles, how many miles did perry run? b) nick ran 12.8 miles less than perry last week. if nick ran 9.2 miles, how many miles did perry run? c) perry ran 9.2 miles less than perry last week. if nick ran 12.8 miles, how many miles did perry run? d) nick ran 9.2 miles less than perry last week. if nick ran 12.8 miles, how many miles did perry run?

The correct answer is D

Nick ran 9.2 miles less than Perry last week. If Nick ran 12.8 miles, how many miles did Perry run?

x - 9.2 = 12.8

x = 12.8 + 9.2

x = 22

Perry ran 22 miles for the week, 9.2 miles more than Nick.

the revenue of the fitness center, y, is the product of two factors: the number of members and the fee paid by each member. there are 320 members now, but number of members goes down by 10 for each $5 increase in fees, so if x is the number of $5 price increases then members is equal to (320 - 10x). since the fee is currently $45, and the fee increases by $5 for every price bump x, the fee is given by (45 + 5x). so, revenue y is given by y = (320 - 10x)(45 + 5x).