use the elimination method to solve the system of equation choose the correct ordered pair 3x+6y=36 3x-6y=0

Can someone factor this fully? my friend and i have two different answers and i would like to know if either of them is right. you in advance. a^2 - b^2 + 25 + 10a

Suppose a store sells an average of 80 cases of soda per day. assume that each case contains 24 cans of soda and that the store is open 10 hours per day. find the average number of soda that the store sells per hour.

Why is x= 4 a solution to the proportion 14/x 56/1 6