Hello can someone please help me with this question. I am so lost!

The following situation can be modeled by a linear function. an equation for the linear function and use it to answer the given question. Be sure you clearly identify the independent and dependent variables. Is a linear model reasonable for the situationdescribed?

You can rent time on computers at the local copy center for a $6 setup charge and an additional $5.50 for every 10 minutes. How much time can be rented for $22?

A.

The independent variable is rental cost(r), indollars, and the dependent variable is time(t), in minutes. The linear function that models this situation is t=?

.B.

The independent variable is time(t), inminutes, and the dependent variable is rental cost(r), in dollars. The linear function that models this situation is request

?minutes can be rented for $22

A liner model (is or is not)reasonable for this situation.???