Find the maximum value of
C = 3x + 2y
Subject to the following constraints:
x 20
y20
x + 3y = 15
4x + y = 16

$20.01

step-by-step explanation:

the sale price is (1.00 - 0.77)($87), or 0.23($87), or $20.01.

in the attachment.   i didn't see your choices.   the word which means there is choices.

step-by-step explanation:

(x,y)

x tells you how much left or right you go from the origin

y tells you how much down or up you go from the origin

so for example (-3,2), you go left 3 and up twice. i denoted which of the ordered pairs is which in my graph.

this is a good question! i'll do some research and come back when i have the answer!