Linear Functions

SAT Math· difficulty 2/5

A plumber charges 75tocomeoutplus75 to come out plus40 per hour. Which equation gives cost CC for hh hours?

  • A

    C=40+75hC = 40 + 75h

  • B

    C=115hC = 115h

  • C

    C=75h+40C = 75h + 40

  • D

    C=40h+75C = 40h + 75

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Explanation

Hourly rate 4040 is slope; service fee 7575 is intercept.

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