How do I solve a+18=7a ?

You have a 32-foot fence around a square garden. there are 4 equal sections. you paint 13 of one section of the fence. what fraction of the fence did you paint? you have a 32-foot fence around a square garden. there are 4 equal sections. you paint 13 of one section of the fence. what fraction of the fence did you paint?

Which of the following expressions is equal to 2x^2+8

Describe the 2 algebraic methods you can use to find the zeros of the function f(t)=-16t^2+400.