Please help me with this algebra homework question as soon as possible please
Question 1.) A carpet cleaning business has 100 customers when they charge $125 for a cleaning. Research shows that every $5 reduction in price attracts another 20 customers. Which equation could be used to represent this situation, where x is the price per cleaning and R(x) is the total revenue?
A.) R(x) = −4x2 + 600x
B.) R(x) = −2x2 + 400x
C.) R(x) = 2x2 − 400x
D.) R(x) = 4x2 − 600x
Question 2.) The cost of renting a fishing boat is $25 per hour for the first 7 hours, $10 per hour for the next 10 hours, and $5 per hour for any additional hours. Identify the cost of renting the boat for 30 hours.
Please please just explain and solve please