At an airport, it cost 7 to park for one hour and 5 per hour for each additional hour.Let x represent the number hours parked.wr
ite the function that models the cost,C(x), of parking x hours, where x is an integer greater than 1. PLEASE DON'T DO THE WRONG AWNSER I NEED THIS
And Thanks :D
Giving 11 Points :D =__=__=__+1__=__=__=
The cost of parking is an initial cost plus an hourly cost. The first hour costs $7. You need a function for the cost of more than 1 hour, meaning 2, 3, 4, etc. hours. Each hour after the first hour costs $5.
Notice the pattern above in the middle column. The number of $5 charges you add is one less than the number of hours. For 2 hours, you only add one $5 charge. For 3 hours, you add two $5 charges.
Since the number of hours is x, according to the problem, 1 hour less than the number of hours is x - 1.
The fixed charge is the $7 for the first hour. Each additional hour is $5, so you multiply 1 less than the number of hours, x - 1, by 5 and add to 7.
C(x) = 7 + 5(x - 1)
This can be left as it is, or it can be simplified as
C(x) = 7 + 5x - 5
C(x) = 5x + 2
Answer: C(x) = 5x + 2
Check: For 2 hours: C(2) = 5(2) + 2 = 10 + 2 = 12 For 3 hours: C(3) = 5(3) + 2 = 15 + 2 = 17 For 4 hours: C(3) = 5(4) + 2 = 20 + 2 = 22 Notice that the totals for 2, 3, 4 hours here are the same as the right column in the table above.
Kim bought 24 apples at the market. She put 4 apples into each of 4 drawers in her kitchen. She gave the rest of them to her friend. How many apples did?
First lets find out how many she put in the drawers.
We know 4 apples per draw 4 drawers = ? apples
4 × 4 = 16 4 drawers = 16 apples
How many does she give her friend when she buys 24 apples and keeps 16 apples?
24 - 16 = amount of apples she gives her friend. 24 - 16 = 8 Kim gives her friend 8 apples.
True. Integers are whole numbers both positive and negative. Natural numbers are only whole positive numbers. So it is true whenever you are dealing with positive integers and it is false when you are dealing with negative integers.
