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Mercedes is going to have her car fixed. Cairo Prince Auto tech charges$45 for an estimate of plus $24 per additional hour of work. Tarantino’s Car Garage offers a free estimate and it charges $30 per additional hour of work. Which of the following statements are true? Select all that apply

Mercedes is going to have her car fixed Cairo Prince Auto tech charges45 for an estimate of plus 24 per additional hour of work Tarantinos Car Garage offers a f class=

Respuesta :

Well I believe that the equation would be

Cairo: y=45+24x

Tarantino: y=30x

The answers would be:

B. Tarantino's cost can be modeled by 30h

D. If the work takes 7 hours , Tarantino's is cheaper

Answer:

Option B and option D are correct.

Step-by-step explanation:

Let the additional number of hours be h.

Cairo Prince Auto tech charges $45 for an estimate plus $24 per additional hour of work. Equation becomes: [tex]45+24h[/tex]

Tarantino’s Car Garage offers a free estimate and it charges $30 per additional hour of work. Equation becomes: [tex]30h[/tex]

Lets check the options:

A: false.

B : true

C: false

when h = 6, for Cairo:

[tex]45+24h[/tex]

[tex]45+24(6)[/tex] = $189

when h = 6, for Tarantino:

[tex]30h[/tex]

[tex]30(6)[/tex] = $180

D: true

when h = 7, for Cairo:

[tex]45+24h[/tex]

[tex]45+24(7)[/tex] = $213

when h = 6, for Tarantino:

[tex]30h[/tex]

[tex]30(7)[/tex] = $210

E: false

We will equal both the equations and find the value of h.

[tex]45+24h=30h[/tex]

=> [tex]30h-24h=45[/tex]

=> [tex]6h=45[/tex]

Dividing by 6 on both sides;

h = 7.5

So, the correct statements are :

Option B and option D.