Noelle always leaves a tip of between 10% and 15% for the stylist when she gets her hair done. this can be represented by the system of inequalities shown below, where y is the amount of tip and x is the cost of the hair service. which of the following is a true statement?

y> 0.1x
y< 0.15x

a) when the tip, y, is $10, the cost of the hair service, x, must be between $100 and $150.

b) when the cost of the hair service, x, is $75 the amount of tip, y, must be between $11.25 and $15.

c) when the tip, y, is $15, the cost of the hair service, x, must be between $50 and $75.

d) when the cost of the hair service, x, is $50 the amount of tip, y, must be between $5 and $7.50.