DatHoboguy53
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At an airport, its costs $7 to park for up to one hour and $5 per hour for each additional hour. Let x represent the number of hours parked. Write a function that models the cost, C(x), of parking x hours, where x is an integer greater than 1.
A: C(x)=5x+12
B: C(x)=5(x+1)+7
C: C(x)=5(x-1)+7
D: C(x)=5x+7

Respuesta :

christinann062
C: C(X)=5(x-1)+7  

because x-1 represents the fact that the first hour costs $7 and then x times 5 represents the fact that each hour after that costs $5
calculista

Answer:

the answer is the option C

[tex]C(x)=5(x-1)+7[/tex]

Step-by-step explanation:

Let

x------> the number of hours parked

C(t)----> the cost of parking

we know that

[tex]C(x)=5(x-1)+7[/tex] -----> equation that represent the situation

Verify

For [tex]x=1\ hour[/tex]

substitute the value of x

[tex]C(1)=5(1-1)+7=\$7[/tex] ------> is correct

For [tex]x=2\ hour[/tex]

substitute the value of x

[tex]C(2)=5(2-1)+7=\$5+\$7=\$12[/tex] ------> is correct

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