Which function is nonlinear?

option C

Step-by-step explanation:

if a function is linear then we know that the highest exponent is 1

so we just look for a function that doesn't have an exponent of 1 and that's option C which has an exponent of  4

C and E

Step-by-step explanation:

example 2 – simplify: step 1: completely factor both the numerators and denominators of all fractions. step 2: change the division sign to a multiplication sign and flip (or reciprocate) the fraction after the division sign; essential you need to multiply by the reciprocal. step 3 : cancel or reduce the fractions.