Answer:
Explanation:
Since both Maria and Bridgette belong to the same public pool they pay same rate for season pass and each class.
Let the season pass be y and swim class cost be x.
Then according to given we have the following equations
Solve the system by elimination, subtract the equations
- y + 9x - y - 6x = 135 - 105
- 3x = 30
- x = 10
Find y
- y + 6*10 = 105
- y = 105 - 60
- y = 45
The initial value is 45 and rate of change is 10.
The equation for the total cost would be
- T = 10s + 45, where T - total cost, s - number of swim classes