How can you evaluate the expression 623 divided by 89 + x times 2 when x equals 12

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! ❤

Which graph or graphs appear to show a sinusoid? < me asap !

If a 12 sided regular polygon rotates about its center, at which angle of rotation will the image of the polygon coincide with the preimage?