Answer:
Step-by-step explanation:
We have to write 243 as a power of some number.
So, if we factorize 243 we get,
243 = 3 × 3 × 3 × 3 × 3
Therefore, we can write 243 as a power of 3.
No other number can be written in powers of 243 because it do not contain any other factor than 3.
Hence, 243 can be written as :

Answer:
A. The rate is -2 each hour
B. It is decreasing, as the hours increase, the gallons decrease
Answer:
(7x+3) (x-1)
hope this helps!!:)
Step-by-step explanation:
A is c=75 B is a=120 C is b= square root of 75 and D= square root of 245