125% of a number is 45 what is the number

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! ❤

The function models the number of accidents per 50 million miles driven as a function

Which is an x-intercept of the graphed function? (0, 4) (–1, 0) (4, 0) (0, –1)