Answer:
150+12x=630
Step-by-step explanation:
The x represents the amount of months and it is multiplied by 12 because each month costs 12$. 150 have to be paid up front and this added to the monthly fee is equal to 630$
1180
(42×28)+4 =x
x= 1180
23.21
The answer you have given is correct.
2.0/4.0
