Which pair of expressions are equivalent? A. 7(2x) and 9x
B. 3x+5x and 15x
C. 4(2x-6) and 8x - 24
D. x + x + x+ x and x^4

help asap, i’ll mark as brainliest if correct!

For the quadratic function [tex]y=(x+4)^2-1[/tex] , do the following: a) rewrite the function in the standard form, b) rewrite the function in intercept form, c) find the vertex, d) find the y-intercept, e) find the x-intercepts.

The tile along the edge of a triangular community pool needs to be replaced? ?

Ashley recently opened a store that sells only natural ingredients. she wants to advertise her products by distributing bags of samples in her neighborhood. it takes one person 22 minutes to prepare one bag. how many hours will it take to prepare 900900 bags of samples if ashley and 55 of her friends do the work?