The answer is B 2,142.72 because when you add it all up then multiply by 12 it will equal that.
The answer for number 3 is 3.c
In 10 months Lisa will have paid the same amount as Kelly, but in month 11 she will have paid more.
75+ 15x ≥ 140
⇒ 15x ≥ 140 -75
⇒ 15x ≥ 65
⇒ x ≥ 65/15
⇒ x ≥ 13/3
⇒ x ≥ 4 1/3
The final answer is x ≥ 4 1/3~