Please help for my DBA.. What is a relation and what makes it different from a function?

Factor completely. 4p^2 + 36p + 81 express the answer in the form (ap + b)^2

Can anyone me with 32,33,36,37,and 40.

Use the linear combination method to solve the system of equations. explain each step of your solution. if steps are not explained, you will not receive credit for that step. 2 + 9 = −26 −3 − 7 = 13