C. 3x+3
..................
We have z = 90•
x = 59 + z
w = y = 180 - x
So x = 59 + 90 = 149•
w = y = 180 - 149 = 31•
All answers are correct.
3 1/4 gallons. Each gallon is 4 quarts, so you divide 13 by 4. That is 3.25 and I just turned it into a fraction because my teacher taught me to do that.

Hope you could get an idea from here.
Doubt clarification - use comment section.
Answer:
1620 :B
Step-by-step explanation:
22/7×3×3×8.6=162.17
162.7 rounded off to the nearest tenth is
the 1620