find carissa'ssalary when she sells $1,700 worth of merchandise.

Question

As a salesperson at roaring waves beack Supplies,Carissa recieves a monthly basepay plus commisionon all that she sells. If she sells $500 worth of merchandise inone month she is paid, $405. If she sells $900 of merchandisein onemoneth, she ispaid $489.

Answer 1

$489 - $405 = $84

$900 - $500 = $400

Thus, from every dollar of merchandise she sells, she gets $(84 / 400)

$1700 - $900 = $800

Thus, she will earn $(84 / 400) * (800) = $168 more.

Hence, her salary for selling $1700 worth of merchandise is:
$489 + $168 = $657