Answer:
C.
Step-by-step explanation:
(6^7)^3 means (6^7)(6^7)(6^7).
When multiply numbers with same base, add the exponents.
6^(7+7+7)=6^(3*7)=6^(21).
In the beginning you could have just multiply 7 and 3 so the answer is 6^(21).
Answer:
A square root of 80 m
Step-by-step explanation:
Answer:
Step-by-step explanation:

From the initial condition,

So we have that 
She will need to drive 110 miles to be the same
we are given

now, we can find x , y and z components

Arc length calculation:
we can use formula


now, we can plug these values

now, we can simplify it




now, we can solve integral


now, we can plug bounds
and we get

so,
..............Answer