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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?

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 H class=

Respuesta :

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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