Answer:
$8,100
Step-by-step explanation:
He pays $225 for three years. There are 12 months in a year, so they are 36 months in 3 years. $225 a month times 36 months will get you $8,100.
Move the 8 over
-x=3x-8
Move the 3x over
-x-3x=8
-4x=8
Divide by -4
x=-2
First you have to find the slope of each line to find out if they are parallel.
8 - 4 = 4
3 - 2 = 1
The slope of PQ is 4
-5 - -1 = -4
-5 - -2 = -3
The slope of RS is 4/3
The slopes aren't equal so the lines aren't parallel.
Hope this helps!!! :)