Pls pls pls pls help pls

What is the equation of the graph below? y=sec(x)-4

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)

Which of the following three dimensional figures has a circle as it’s base