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24 August, 06:49

Sid has a job at Morgan Motors. The salary is $1200 a month, plus 3% of the sales price of every car or truck Sid sells (this is called a commission). (a) The total of the sales prices of all the vehicles Sid sold during the first month on the job was $72000. What was Sid's income (salary plus commission) ? (b) In order to make $6000 in a single month, how much selling must Sid do? (c) Write a linear equation that expresses Sid's monthly income y in terms of the value x of the vehicles Sid sold. (d) Graph this equation. What is the meaning of its y-intercept, and the meaning of its slope?

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  1. 24 August, 08:34
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    Given:

    salary of 1,200 a month plus 3% of the sales price.

    a) The total of the sales prices of all the vehicles Sid sold during the first month on the job was $72000. What was Sid's income?

    72,000 x 3% = 2,160 commission

    1,200 + 2,160 = 3,360

    b) In order to make $6000 in a single month, how much selling must Sid do?

    6,000 - 1,200 = 4,800

    4,800 / 3% = 160,000 per month.

    c) Write a linear equation that expresses Sid's monthly income y in terms of the value x of the vehicles Sid sold

    y = 1,200 + 3%x; where x is the sales price of every vehicle sold.
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