Answer:
Infinite number of solutions. You can do any set with an average of 20. Ex. 18+19+20+21+22.
Step-by-step explanation:
Answer:
See explanation
Step-by-step explanation:
There are so many ways we can rewrite
.
We can apply the power rule to obtain:
.
We could also simplify this further because 
This implies that:
.
Or
.
All these are equivalent expressions.
Answer: Marianne would have to get a 79 on her final test.
Step-by-step explanation: In order to get the average, you have to add all of your numbers up and multiply by how many numbers you have (in your case, 3) and you will find your answer.
79+81+77=237 237 divided by 3 is 79. ( Sorry I used a calculator :( )
A function in math is a relationship or expression involving one or more variables.