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Greeley [361]
3 years ago
8

A car rental agency charges ​$50 per week plus ​$0.50 per mile to rent a car.

Mathematics
1 answer:
-BARSIC- [3]3 years ago
6 0
The cost in dollars is given as 50 + 0.50x, so ...
f(x) = 0.50x +50

B) You want to find x for f(x) = 100. Substitute the given numbers and solve for x.
100 = 0.50x +50
50 = 0.50x
50/0.50 = x
100 = x
You drove 100 miles during the week if the cost was $100.
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<h2>Hello!</h2>

The answer is:

The answer is the fourth option,

f(-3)=-\frac{1}{3}

<h2>Why?</h2>

Piecewise functions are functions that are composed by two or more expressions, the expression to use will depend of the domain or input that we need to evaluate.

We are given the piecewise function:

\left \{ {{\frac{1}{x}, if x

There, we know that:

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So, for this case, the function will be:

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We should use the second expression if the value to evaluate is greater or equal than 2.

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