Answer:
They gained 4 1/2 yards
Step-by-step explanation:
It was a positive gain because they didn't go back.

For each boy, there are 5 girls
Answer:
No
Step-by-step explanation:
96+88+74+76=334/4=83.5
96+88+74+76+100=434/5=86.8
The average can't be higher than a 91%
You would now have to pay her $9.85
All you have to do, is combine like terms. Let's go through it:

Arrange it so you can easily combine like terms:

So, your answer for the sum is 1) 7x² - 10x + 2