Theresa is taking a multiple-choice test and does not know an answer. she can guess answer a, b, c, d, or e. wht is the probability that theresa will guess correctly? incorrectly?

If f(x)=2x-6 and g(x)=3x+9, find (f-g)(x)

A. 90 degrees b. 45 degrees c. 30 degrees d. 120 degrees

This is my question~~ ( r ^ 4 - 2r ^ 3 - 23 r ^ 2 - 4r - 32)÷(r+4) ~~ i must use long division to solve it : / i was wondering if anyone world like to solve it. and if so, share step-by-step explanations! you! ❤