Linear Functions

SAT Math· difficulty 3/5

A subscription costs \0forthefirstmonthandfor the first month and$15permonthafter.Costper month after. CostCforformmonths( months (m \ge 1$):

  • A

    C=15(m1)C = 15(m - 1)

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  • B

    C=15mC = 15m

  • C

    C=15m+15C = 15m + 15

  • D

    C=15m15C = 15m - 15

Explanation

Pay for m1m - 1 months at \15$ each.

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