What is $6.00÷1.50? Please give me the right answers

Evaluate 4 a for a = 5 2/3 . express your answer in simplest form.

Abacteria population is tripling every hour. by what factor does the population change in 1/2 hour? select all that apply

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?