If the cost is a function depending on the number of sections, how much will 200 sections cost?

How do you find principle and simple interest

Part a: sam rented a boat at $225 for 2 days. if he rents the same boat for 5 days, he has to pay a total rent of $480. write an equation in the standard form to represent the total rent (y) that sam has to pay for renting the boat for x days. (4 points)

Solve each equation using the quadratic formula. find the exact solutions. 6n^2 + 4n - 11