Answer:
Step-by-step explanation:
The domain is X value and range is Y so just put y=x^3 in desmos and the graph appears then check its range and domain from it. the range is positive and nevative infinity
the second one I think
Combine like terms:
5a-7a=-2a
3b+4b=7b
-2a+7b
Hope this helps!!
Answer: See attached.