Question

A family went to a baseball game. The cost to park cars was $5 and the cost per ticket was $21. Write a linear function in the form y=mx+b for the total cost of going to the baseball game, y, and the total number of people in the family, x.

Answer 1

The total cost
`y` in dollars of going to the baseball game for
`x` people of a family can be given as:

`y=21x+5`

Explanation:

Given:

At a baseball game:

Cost of car parking = $5

Cost per ticket = $21

To write an equation in the form of
`y=mx+b` representing the total cost of going to the baseball game.

Solution:

The total number of people in the family is =
`x`

Using unitary method to find the cost of tickets for
`x` persons.

If 1 ticket costs = $21

Then,
`x` tickets will cost in dollars =
`21x`

Fixed rate for car parking = $5

Thus, the total cost
`y` in dollars of going to the baseball game for
`x` people of a family can be given as:

`y=21x+5`