Can someone please help me it’s a quiz and idk what to do pls

Find the average rate of change for f(x) = x2 − 3x − 10 from x = −5 to x = 10.

You are updating your garage and the only thing left to paint is your garage day. you're only going to paint the slide that faces the street. the garage door is 9 fert 8inches tall and 120 inches wide. you need to know the surface area of the side of the garage door to determine how much paint to buy. the hardware store sells paint by how much covers a square foot. what is the surface area you should report to the hardware store what is the answer

What is the perimeter of a rectangular building that is 80 feet wide and 140 feet deep?