Which situation best represents the equation below?

500 - 40x = 340

Agreeting card company can produce a box of cards for $7.50. if the initial investment by the company was $50,000, how many boxes of cards must be produced before the average cost per box falls to $10.50?

Find two consexutive odd integers such that the sum of their square is 650

Run a linear regression to determine an equation (y=mx+b y=mx+b)