Which relation is a function?

a. {(-2,10), (-6,10), (-2,3)}

b. {(5,5), (5,9), (5,15)}

c. {(0,3), (0,9), (12,-4)}

d. {(-5,1), (4,9), (6,10)}

How do you do the foil method with polynomials?

Oliver had $50 on the day before his birthday. after he recived some money for his birthday , he had $75. write and solve eqaution to find how much money oliver received for his birthday. x+50=75

Asap will give brainiest to first person to answer what is the measure of angle b in the triangle? enter your answer in the box.m∠b=