Tracy has a cell phone plan that provides 250 free minutes each month for a flat rate of $29. For any minutes over 250, Tracy is charged $0.35 per minute. Which of the following piecewise functions represents charges based on Tracy's cell phone plan?

A. f(x)={29,x less than or equal to 250}
{20+.35x,x250}
B. f(x)={29,x250}
{20+.35x,xless than or equal to 250}
C. f(x)={29,xless than or equal to 250}
{.35x,x250}
D. f(x)={29,xless than or eual to 250}
{29+.35(x-250),x250}

Question

Tracy has a cell phone plan that provides 250 free minutes each month for a flat rate of $29. For any minutes over 250, Tracy is charged $0.35 per minute. Which of the following piecewise functions represents charges based on Tracy's cell phone plan?

A.  f(x)={29,x less than or equal to 250}
                 {20+.35x,x>250}
   B.  f(x)={29,x>250}
                {20+.35x,xless than or equal to 250}
   C.  f(x)={29,xless than or equal to 250}
                 {.35x,x>250}
   D.  f(x)={29,xless than or eual to 250}
                 {29+.35(x-250),x>250}

anonymous · Answer

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