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The cost of parking a car in a parking lot is a function of the time parked. Compare the cost of parking

in two different lots by using the different representations shown.
Parking Lot A
Time
(hours)
2
7
Cost
(dollars)
10.60
21.20
37.10
Cost (dollars)
55
50
45
40
35
30
25
20
15
10
Parking Lot B
0123
Time (hours)
9 10 11

The cost of parking a car in a parking lot is a function of the time parked. Compare-example-1
User MWiesner
by
8.5k points

1 Answer

3 votes

Answer: we can conclude that Parking Lot A is more expensive than Parking Lot B for 10 hours of parking, since Parking Lot A would cost $42.20 for 10 hours (using the equation we found below), while Parking Lot B would only cost $35.

Step-by-step explanation: To compare the cost of parking in the two different lots, we need to use the given information to determine the cost for a given amount of time parked in each lot.

For Parking Lot A, we can use the given data to create a table of time and cost pairs:

Time (hours) Cost (dollars)

2 10.60

7 21.20

12 37.10

Note that we can use the given pairs of time and cost to determine a function that relates the two variables. A linear function is a good choice here, since the cost appears to increase at a constant rate over time. Using the two given data points (2, 10.60) and (7, 21.20), we can find the slope of the line:

slope = (21.20 - 10.60) / (7 - 2) = 2.12

Using this slope and one of the data points, we can find the y-intercept of the line:

y - 10.60 = 2.12(x - 2)

y - 10.60 = 2.12x - 4.24

y = 2.12x + 6.36

This equation represents the cost of parking in Parking Lot A as a function of time parked.

For Parking Lot B, we can use the given graph to estimate the cost for a given amount of time parked. From the graph, we can see that the cost for parking 10 hours in Parking Lot B is about $35.

Therefore, we can conclude that Parking Lot A is more expensive than Parking Lot B for 10 hours of parking, since Parking Lot A would cost $42.20 for 10 hours (using the equation we found above), while Parking Lot B would only cost $35.

User Mavya Soni
by
7.6k points

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