G(f(x))= (7x+8)^4
g(f(x))= (7(0)+8)^4
=(0+8)^4
=8^4
=8•8•8•8
=4,096
The difference will be

.
Remember that parentheses are needed for the second polynomial because the negative is distributed to all of its terms.
T is greater than -15 because numbers after -15, like -16... are less than -15, so when its decreasing it gets lower. Since the questions says the temp stayed above -15, that means the temp could be -14...-13 and so on.
With what? Maybe I can help
Answer:
-4
Step-by-step explanation:
mark branliest :))