A, the average is adding all the numbers up and dividing by the amount of numbers
Answer:

Step-by-step explanation:
x^-y=1/(x^y) so 3t^-4=3/(t^4)
Answer:
8/64
Step-by-step explanation:
Answer:
Step-by-step explanation:
y a x -13 6+x
Answer:
10 + (-8)
Step-by-step explanation:
Subtracting is like adding a negative
10 -8
10 + (-8)