Do b plz for the expressions if u want do the other 3 but u dont have to i rlly just need on b

Enter the number of complex zeros for the polynomial function in the box. f(x) = x+ + 5x² +6

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?

1) you deposit $2,500 in an account that earns 4% simple interest. how much do you earn in eight years?