Question

The cost for children under twelve at a certain buffet restaurant is a base charge of a dollar plus twenty-five cents for each year of the child's age. Represent this cost as an expression, using y to stand for the child's age in years. Then use the expression to find the cost for a child who is nine.

Answer 1

c = 1 + 0.25y  , cost for a child who is nine = $ 3.25

Step-by-step explanation:

Let say Cost for children under twelve = c

Base charge = 1 $

Let say age of children = y Years

twenty-five cents for each year of the child's age

Cost for y years =   0.25y

c = 1 + 0.25y

if y = 9 years

Then c = 1 + 0.25*9

=> c = 1 +  2.25

=> c = 3.25 $

cost for a child who is nine = $ 3.25

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