What’s the answer to this question.

factor x2 - x-30.
a.(x + 5)(x - 6)
b.(x + 4)(x - 5)
c.(x - 7)(x - 3)
d.(x + 9)(x - 3)

Which of the following represents the range of the graph of f(x) below

Apatient is to be given 35 milligrams of demerol every 4 hours. you have demerol 50 milligrams/milliliter in stock. how many milliliters should be given per dose?

Given the two similar triangles, how do i find the missing length? if a=4, b=5, and b'=7.5 find a'