Answer:
a) $12/child
b) $260
c) c = 12n + 260
d) n can be any whole number up to the maximum number of children allowed.
Explanation:
A)
440 - 380 = 60
15 - 10 = 5
60 / 5 = 12
There's a $12 additional charge for each child.
B)
10 * 12 = 120 (total additional charge)
Subtract the total additional charge from the total price to find the initial charge.
380 - 120 = 260
Initial fee is $260
C)
C is going to equal cost/total cost and n will equal the number of children attending.
c = 12n + 260
This is because you pay an extra $12 for every child attending and the initial price is $260. You want to add these together to find the total price.
D)
n can equal any whole number as long as it doesn't exceed a set limit (if there is one set). Of course there can't be half a child so it will always be numbers like 10, 15, 20, 25, 32, etc.