BRAINLIEST ✨✨ Explain what rational expressions have to only consist of inorder to be valid. in other words, what types of variables & notations are to be excluded from polynomials under a rational expression.

answer: a and c are correct

step-by-step explanation:

the +5 is the vertical translation

the added negative symbol in front is the reflection over the y-axis

-13

step-by-step explanation:

f(x)=2x-5 for f(-4)

f(-4)   means let x=-4

f(-4) = 2(-4) -5

f(-4) =-8-5

      = -13

answer: a.

step-by-step explanation: the answer is a. because, you need to converge the fractions to find a solution.