This entire page about functions has me stuck, I know the basics of functions and graphs but i'm still a little stumped, please help

Which math sentence can be used to determine if the triangle is a right triangle?

The distributive property allows you to say that 3(x − 1) = 3x −

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)