The table shows a rodent population over time. Use a graphing calculator to find an exponential model of the form y=abt that represents the population y after t years. Round the value of a to the nearest whole number and round the value of b to the nearest tenth. Year, t Population, y
0 200
1 230
2 275
3 325
4 400
5 485

You can find the constant of proportionality by finding the ratio of

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?

Gravel is being dumped from a conveyor belt at a rate of 25 ft3/min, and its coarseness is such that it forms a pile in the shape of a cone whose base diameter and height are always equal. how fast is the height of the pile increasing when the pile is 14 ft high? (round your answer to two decimal places.) ft/min