Find k so that (1,k) is equidistant from (4,0) and (-4, 8)

John bought 5 lemons and used 2 of them for a salad how much did he use for.a salad . he used % of the lemons.

Which ordered pair (c,d) is a solution to the given system of linear equations- c+2d=13 -9c-4d=-15

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! ❤