Mandy and Sarah each have a membership to
the gym. Mandy's membership is
represented by the function
y= 3x + 29, where x represents
the hours with a trainer and y
represents the cost. The cost
of Sarah's membership is shown
in the graph.

1. Write a function equation for sarahs membership price.

2. Who pays the higher initial monthly cost?

3. If both Mandy and Sarah spend 12 hours with a trainer, who would pay the most money?