Please help me solve

20 only answer if 100% sure most high school-aged teens are very active. a. true b. false

If f(x)=x^3 and g(x)=2x+7 when g(x)=-5

Barney & noblet customers can choose to purchase a membership for $25 per year members receive 10% off all store purchases 1. how much would a member pay per year if he bought $50 worth of items each year? 2. write a slope-intercept equation that expresses how much a member pays per year using x to represent his purchases per year 3. how much would a member have to spend per year to pay off his membership fee?