M(-1, 13) is the midpoint of segment RS. The coordinates of S are (4, 12). What are the coordinates of R? *

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! ❤

Acomputer store buys a computer system at a cost of $370.80. the selling price was first at $ 618, but then the store advertised a 20 % markdown on the system. answer parts a and b. a. find the current sale price.

Which exponential function has an initial value of 2? f(x) = 2(3x) f(x) = 3(2x)