Question

Select the correct answer.

Answer 1

Using a linear function, it is found that Company D would have given you the best deal for 7 hours of moving.

What is a linear function?

A linear function is modeled by:

y = mx + b

In which:

• m is the slope, which is the rate of change, that is, by how much y changes when x changes by 1.

• b is the y-intercept, which is the value of y when x = 0, and can also be interpreted as the initial value of the function.

In this problem, we consider:

• The flat fee as the y-intercept.

• The hourly rate as the slope.

Hence the costs for x hours of moving from each company are given as follows:

• A(x) = 50 + 25x.

• B(x) = 40 + 30x.

• C(x) = 60 + 20x.

• D(x) = 150 + 5x.

For 7 hours, the costs are given as follows:

• A(7) = 50 + 25 x 7 = $225.

• B(7) = 40 + 30 x 7 = $250.

• C(7) = 60 + 20 x 7 = $200.

• D(7) = 150 + 5 x 7 = $185.

Due to the lower cost, Company D would have given you the best deal for 7 hours of moving.

More can be learned about linear functions at brainly.com/question/24808124

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