I’m guessing C
(It’s probably wrong, I just need points)
So first let’s combine like terms and add 4/9x and 1/5x together to get 29/45x =58. Next, multiply 58 by 45/29 to isolate x, so x=90
(-4)^-6*(-4)^7 = (-4)^1 = -4
answer a. -4
50 Miles at an average rate