When Carrie mows a lawn, she charges a flat fee of $5 plus an hourly rate, r. Carrie worked 2 hours at her last job. The equation 2r+5=20 re

Question

When Carrie mows a lawn, she charges a flat fee of $5 plus an hourly rate, r. Carrie worked 2 hours at her last job. The equation 2r+5=20 represents, in dollars, what Carrie charged. What is Carrie’s hourly rate?

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Eva 1 week 2021-11-23T16:26:48+00:00 1 Answer 0

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    2021-11-23T16:28:36+00:00

    Answer:

    Carrie’s hourly rate = $7.5 per hour.

    Step-by-step explanation:

    Flat fee charged by Carrie = $5

    Hourly rate charged by Carries is given = \$r per hour

    Working 2 hours at job, the equation that represents amount charged by Carrie is given by:

    2r+5=20

    Evaluating the above equation to find Carrie’s hourly rate r

    Subtracting both sides by 5.

    2r+5-5=20-5

    2r=15

    Dividing both sides by 2.

    \frac{2r}{2}=\frac{15}{2}

    r=7.5

    Carrie’s hourly rate = $7.5 per hour.

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