Answer:
im pretty sure that the answer is D i know for a fact that it is D
Ask a teacher or look it up or use a text book
Answer:

Step-by-step explanation:
We are given the following in the question:
Flat fee = 6 dollars
Charges per hour = 10 dollars per hour
Let Steve work for h hours.
Then, we can write the total charge in the following manner:
Total charge =

Putting values, we get,

is the required equation for total charges if Steve worked for h hours.
Answer:
they got -21 when they were supposted to get +21
and they also got +6x when they were supposted to get -6x
Step-by-step explanation:
that's because -3 and 2x are multiplied together and when you are multiplying negative and positive number you need to get negative result.
when you are multiplying negative with negative number, you will get positive number.