Which of the followmg is an expression for "doubling a number n and dividing by 3"​

Aquantity with an initial value of 3900 decays exponentially at a rate of 35% every hour. what is the value of the quantity after 0.5 days, to the nearest hundredth?

17 in long 1.3 ft wide and 8in high what is the volume

Create a data set with 8 points in it that has a mean of approximately 10 and a standard deviation of approximately 1.