Please help with this function problem: 5 stars to best answer!

The function P(x) = 0.85x - 64 models the relationship between the number of pretzels x that a certain vendor sells and the profit the vendor makes. Find the profit the vendor makes from selling 800 pretzels.

Choices:
$744
$680
$616
$736

First best answer gets 5 stars <3

plug 800 in for 'x'

P(800) = 0.85(800) - 64

simplify.

680 - 64 = P(800)


$616 is your answer.

$616