Question

Mercedes is going to have her car fixed. Cairo Prince Auto Tech charges $45 for an estimate 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.
1.Cairo Prince’s cost can be modeled by 24h.
2.Tarantino’s cost can be modeled by 30h.
3.If the work takes 6 hours, Cairo Prince is cheaper.
4.If the work takes 7 hours, Tarantino’s is cheaper.
5.It will take 10 hours of work for both costs to be the same.

If you answer, please just tell me what numbers to pick

Answer 1

Cairo's cost is modeled by 45 + 24h
Tarantino's is modeled by 30h

For h = 6:
Cairo = 45 + 24*6 = 189
Tarantino = 180

For h = 7
Cairo = 45 + 24*7 = 213
Tarantino = 210

For h = 10
Cairo = 45 + 24*10 = 285
Tarantino = 300

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