I am not going to answer each but here is a general answer.
y is total price and x is number of kids
Sandy's equation would be y= 10+5x
Kimmi's equation would be y= 25
For them to equal we would have 25=10+5x
Simplify
5x=15
x=3
So for them to be equal, Sandy should have 3 kids.
So if someone has 5 children then he should choose Kimmi
Answer:31
Step-by-step explanation: take all of the odd numbers between 16 and 47. To find the mean, or average, you add up all of your numbers and divide that number by how many numbers you started with. all of the odd numbers added together=465. divide that by the 15 odd numbers(divide by 15) and then you have your average.