Question

Tariq is a mechanic. He charges his customers by the hour. The first hour of service costs $122. The second hour of service costs $171.99. The third hour of service costs $221.98. Write an equation in the form of y=c +d (x -1) to represent this situation. Explain how you got your equation.

plz help
i need help to get the equation
171.99 - 122 = 49.99
221.98 - 171.99 = 49.99
Sure looks like
y = 122 + 49.99(x-1)

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