Which equation is equivalent to ^3 square root of 8^x urgent!

Brainliest ! which of the coordinates are not of th vertices of the feasible region for the system of inequalities y≤4,,x≤5,x+y> 6 a(2,4) b(0,6) c(5,4) d(5,1)

Mat bought a phone for $100. he has to pay $30 per mouth. if he has paid $640 in total, how many mouth has he had the phone?

An 18% discount on a watch saved a shopper $72. find the price of the watch before the discount