Slope = 5, goes through the point (2, 7)

Geometry answer picture question pls . reason and statements

If f(x)=-x^2+6x-1 and g(x)=3x^2-4x-1,find(f+g)(x)

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)