Solving basic combined equations

5x - 3=22

 1.1     Pull out like factors :

   5x - 25  =   5 • (x - 5) 

 2.1      Solve :    5   =  0

This equation has no solution.
A a non-zero constant never equals zero.

 2.2      Solve  :    x-5 = 0 

 Add  5  to both sides of the equation : 
                      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: