HELP PLS WILL GIVE BRAINLIEST!! A department store buys 400 shirts at a cost of $3,200 and sells them at a selling price of $10 each. Find the percent markup.

b. would be the answer : )

step-by-step explanation:

step 1: add -16x to both sides.

16x−4y+−16x=64+−16x  

−4y=−16x+64

step 2: divide both sides by -4.

−4y /-4 = -16x + 64/-4

answer:   y=4x−16

hope i'm right

6x = 48

i hope this . 6 cards each and a total of $48. dvide each side by 6 and you will have your answer.