The cost C (in dollars) for the care and maintenance of a horse and carriage is C=15x+2000. the company charges $35 per ride. Write an equation for the revenue R in terms of the number of rides

So let R equal to the revenue of the company

x be the number of rides

since the cost per ride is $ 35

so the equation for revenue is

R = 35x

the profit can also be solve

profit = revenue - cost

profit = R - C

profit = 35x - 15x - 2000

profit = 20x - 2000