A 25 gram sample of a substance that's used for drug research has a k-value of 0. 1208. N = Noe No = initial mass (at time t = 0) = mass at time t k - a positive constant that depends on the substance itself and on the units used to measure time t = time, in days. Fine the substances half life, in days, round your answer to the nearest tenth​

How to find the exponential function y=ca^x, with points (1,2) and (2,1)

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?

Aregular pan has a length that is 4/3 the width. the total area of the pan is 432in.2. what is the width of the cake pan?