Algebra help cant figure out failing bad?

Question

1. Media services charges $40 for a phone and $30/month for its economy plan. The equation c=30t+40 describes the total cost, c, of operating a media services phone for t months. The total cost for 10 months of service is $

If a customer has only $110 available how many months of service can she receive?

2. Graph the system of inequalities. y greather then or equal to -1 x greater then or equal to 2

3. On three consecutive passes, a football team gains 5 yards, loses 37 yards and gains 19 yards. What number represents the toal net yardage?

Answer 1

Five

Answer 2

1. The $110 represent the c variable you have in your equation. So,



110=30t+40

110-40=30t+40-40

70=30t

70/30=30t/30

2.33=t  and since t represents the months she can get service, the answer is 2 full months

2. You have to draw a vertical line that starts from -1 and goes up all the way and a horizontal line that starts at 2 and goes all the way to the right.

3. gain= +

    lose= -

+5-37+19= -13

Answer 3

3) lose of 13 yards

5 - 37 + 19 = -13

Answer 4

1. total for ten months is 340 and can only pay for 2 months which is 100

2. idk

3.pretty sure its 61