Express this number in scientific notation. 0.000000591 A. 5.91 × 10–7 B. 5.91 × 10–6 C. 5.91 × 106 D. 5.91 × 107
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Answer:
Step-by-step explanation:
Note that the cost function is , which gives us the cost of electricity for x hours of consumption
a). The function
To find out the inverse function, we interchange the labels of x and y and solve for y, that is
when solved for y we have
So the inverse function is given by .
c) We will use the inverse function to find the amount of hours the customer can use eelectricity. It is simple obtained by evaluating the inverse function at the desired cost (i.e )
that is
that is, the custome can consume at most 1.41 hours of electricity.