split the right triangle from the trapezoid and solve for that right triangle first
Given :
Service cost , c = $40.
Amount paid for each message , m = $0.02 .
To Find :
Equation represents the total cost C in dollars for a month when eric send t text message.
Solution :
Let , total cost be C .
It is an linear equation with slope equal to 0.02 and y-intercept equal to 40.
So ,

Hence, this is the required solution.
Answer:
Is this a joke or wat if it is why
87 1/2 is the answer. hope it help.