PLSSS HELP this is for a rlly big test and i still have 20 questions left

The amount of data left on the cell phone six gb for 81.5 gb of data is used how much data is available at the beginning of the cycle

What is perpendicular to y=-1/2x+11

Consider this expression and the steps to evaluate it. 4^5(−2)^9/4^8(−2)^3 1. apply the quotient of powers:      (−2)^a/4^b 2. evaluate powers:           c/d select the value of each variable. a = _ b = _ c = _ d = _