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Linear Equations in One Variable

SAT Math· difficulty 4/5

A salesperson earns a base salary of 400perweekplus400 per week plus 8%commissiononsales.Ifsheearnedcommission on sales. If she earned1{,}040 last week, what were her sales?

  • A

    $7{,}500

  • B

    $8{,}000

    check_circle
  • C

    $7{,}000

  • D

    $6{,}500

Explanation

400+0.08s=1040400 + 0.08s = 1040, so 0.08s=6400.08s = 640 and s=8000s = 8000.

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