What does 4+4c-5 meanwhar does 4+4c-5 mean

Which representation has a constant of variation of -2.5

Which of the following quartic functions has x = –1 and x = –2 as its only two real zeroes?

`if you have a set of parallel lines a and b cut by transversal x, if angle 1 = 167 degrees, what is angle 4 and why. also what is the measure of angle 5 and why? you need to use the names of the angle relationship and explain. ''.