Question

A waiter's weekly salary can be modeled by the equation y = 0.2x + 300, where x is the amount spent by the customers in dollars and y is the waiter's total income in dollars.

By how much does the waiter's weekly income increase for every $500 spent by his customers during that week?

A
$100

B
$300

C
$400

D
$500

Answer 1

A. $100

Explanation:

y = 0.2x +300

0.2(500) + 300 = 400

0.2(1000) + 300 = 500