A linear function $f$ gives a company's profit, in dollars, for sel…

Question

Prompt

A linear function

f

gives a company's profit, in dollars, for selling

x

items. The company's profit is $190 when it sells 4 items, and its profit is $670 when it sells 10 items. Which equation defines

f

f (x) = 180 x - 670

f (x) = 67 x

f (x) = 80 x - 10 x

f (x) = 80 x - 130