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11 July, 08:14

As a salesperson you get $23 / day and $3.60/each sale you make. If you want to make at least $84. in one day, how many sales would need to make?

a 15

b 16

c 17

d 18

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Answers (1)
  1. 11 July, 10:52
    0
    c 17

    Step-by-step explanation:

    You make 23 a day plus 3.60 per sale

    Income = 23 + 3.6 s

    You want to make at least 84

    84 ≤ 23 + 3.6 s

    Subtract 23 from each side

    84 - 23 ≤ 23-23 + 3.6s

    61 ≤ 3.6s

    Divide by 3.6 on each side

    61/3.6 ≤ 3.6s/3.6

    16.94444 ≤ s

    You must make more than 16.94444 sales

    But you cannot make part of a sale so

    You must make at least 17 sales
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