C. If you have to add on a number it is nonproportional
-19.8 > 3.6y
-19.8/3.6 > 3.6y/3.6
-5.5 > y
The increase in price was 10%
2.5*.1=.25
2.5+.25=2.75
hope this helps
Answer:
The equation is p=34a+12, and a=7
Step-by-step explanation:
Perimeter is all of the sides added together
p=12a+6a+8+6a+8+10a-4
Combine like-terms
p=34a+12
Solve for a by making p equal to 250
250=34a+12
Subtract 12 from both sides
238=34a
Divide both sides by 34
7=a
