(-4)^-6*(-4)^7 = (-4)^1 = -4
answer a. -4
-7x -7y = 21
Y = 6
Since they are giving you the value of 6 you just plug it in the equation
-7x - 7(6) = 21
-7x - 42 = 21
+ 42. +42
-7x = 63
/-7. /-7
X = -9
Answer: The 3rd one! Letter C.
Step-by-step explanation:
I used a calculator!
$91/ 7 = $13 per dog
$117/$13 = 9 dogs
He washed 9 dogs
