Question

Rahul is going to an amusement park. The price of admission into the park is $15, and once he is inside the park, he will have to pay $4 for every ride he rides on. How much money would Rahul have to pay in total if he goes on 7 rides? How much would he have to pay if he goes on rr rides?

Answer 1

Using a linear function, the costs are given as follows:

• 7 rides: $43.

• r rides: 15 + 4r.

What is a linear function?

A linear function is modeled by:

y = mx + b

In which:

• m is the slope, which is the rate of change, that is, by how much y changes when x changes by 1.

• b is the y-intercept, which is the value of y when x = 0, and can also be interpreted as the initial value of the function.

For this problem, we have that:

• The admission fee is the intercept.

• The cost per ride is the slope.

Hence the cost for r rides is given by the following linear function:

C(r) = 15 + 4r.

The cost for 7 rides is given by:

C(7) = 15 + 4(7) = 15 + 28 = $43.

More can be learned about linear functions at https://brainly.com/question/24808124

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