Answer:
9/4 divided 5/8 = 3.6 (Ans)
Are you asking to simplify all of those equations?
![[Hello,BrainlyUser]](https://tex.z-dn.net/?f=%5BHello%2CBrainlyUser%5D)
Answer:
$21.84
Step-by-step explanation:
.30
31.20 * .30=9.36
31.20 - 9.36 =21.84
The price of the shirt before the markup is $21.84.
[CloudBreeze]
Answer:
1.6
Step-by-step explanation:

A) The equations are shown on the attached graph.
x = juice box cost
y = water bottle cost
B) Kara's proposed solution satisfies the first equation, but not the second one.
C) The solution is shown on the attached graph.
____
As a bonus, you get a graph for the other problem you posted. Please note this graph has some issues. Wherever there's a solid line ⌝ or ⌞ the actual shape of the graph should be the opposite one of these.