Problem:

Parking at the airport costs $24.99 for each night. Which equation can be used to find r, the cost in dollars to park s nights?

s = 24.99 + r

r = 24.99 + s

r = 24.99s

s = 24.99r

(c) Equation which can be used to find r, the cost in dollars to park s nights is r = 24.99 s

Step-by-step explanation:

Here, the parking cost of 1 night at the airport = $24.99

Now, here the total number of nights the car is parked at airport = s

R = The total cost of parking s nights

Now, The cost for parking s nights = s x (Cost of parking 1 night)

= s x ($24.99) = 24.99 s

Also the cost for parking s nights = r

⇒ r = 24.99 s

Hence, equation which can be used to find r, the cost in dollars to park s nights is r = 24.99 s