1. 5x + 2 = 27
how to work backwards on this type of problem

5x+2=27

subtract 2 on both sides

5x=25

divide both sides by 5

x=5

part a

x     y

0     8

1     7.5

2     7

3     6.5

4     6

5     5.5  

for every hour i deducted .5 inches from the length of the candle

part b

it is a function because for every x value there is only one y value

part   c

for every x value there is only one y value

x       y

0       8

1       7.6

2       7.2

3       6.8

step-by-step explanation:

the height of the surface increases from the center out to the sides of the road

it is c!