Linear Functions

SAT Math· difficulty 2/5

A gym charges a 50membershipfeeplus50 membership fee plus20 per month. Which equation gives the total cost CC after mm months?

  • A

    C=20m+50C = 20m + 50

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  • B

    C=50m+20C = 50m + 20

  • C

    C=70mC = 70m

  • D

    C=50+20C = 50 + 20

Explanation

Monthly rate 2020 is the slope; one-time fee 5050 is the y-intercept. C=20m+50C = 20m + 50.

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