For one set the two equations equal to eachother and solve from there. 2 is 45
For three set the two equations equal. Same for four
Answer:

Step-by-step explanation:
We want to simplify:

We convert to improper fraction to get:

We now deal with the parenthesis by multiplying with the reciprocal of 2.

This gives:

We multiply to get:

This simplfies to:

We write as mixed number

Answer:
$15.71 each
Step-by-step explanation:
I just followed the answer sheet
Kelly .7 > Mary .49
Because kelly is actually .70 away from school when Mary is .49.
So Kelly would be farther away from school then Mary.
Answer:
2/3 she will not win a prize
Step-by-step explanation:
1 in 3 balloons have a prize therefore 2 in 3 balloons do not have a prize