Answer:
n+4≤13
n-(-6)<9 or -6-n<9
68-17≤n in this situation n can be no greater than 51 because he has AT THE MOST 51 envelopes to address.
Step-by-step explanation:
2^2 , or 4
since the exponents have the same base, we can subtract the exponent of the numerator by the exponent in the denominator.
So 2^-3 - 2^-5 = 2^(-3-(-5)) = 2^2
The new exponent is 2 because -3-(-5) is equal to 2.
Answer:

Step-by-step explanation:
Given


Required
Determine the height at the third rebound
At first rebound;

Second rebound

Third rebound

Hence; the equation is:

Solving further;

180 + 30x = 60 + 50x
⇒ 20x = 120
⇒ x = 6 minutes
<span>it will take 6 minutes for Millie to catch up with Ben</span>
Answer:
D I think most likely
Step-by-step explanation:
9 would be your answer to your left side and its close to 10 so 9 would work I guess.