OLZ HELP 15 points WILL MARK BRAINLIEST IF CORRECT Which expressions are equivalent to 9+h+(j+k)? Check all that apply.
9+(1+y)+k
(g+h) +jk
(g+n) +j+k
9+(hj)+k
gh+jk
(h+])
9+h(j+k)

Which of the following is a function? a.) {(-2, -4/5), (-1,-,,-1)} b.) {(-2,,1/,3/,1)} c.) {(-22)} d.) {(-21)}

Suppose you are an avid reader and are looking to save money on the cost of books instead of paying about $20 for each book, you decide to look into purchasing a kindle for $120 you can purchase e-books for about $5 each 1. find the slope-intercept equation for the cost of the hard copy of books using x to represent the number of books 2. find the slope-intercept equation for the cost of the kindle with cost of e-books using x to represent the number of books

The roots of the function f(x) = x2 – 2x – 3 are shown. what is the missing number?