The amount of a radioactive isotope decays in half every year. the amount of the isotope can be modeled by f(x)=346(1/2)^x and f(1)=173 what does the 1/2 represent

Write a function that matches the description. a cosine function has a maximum of 5 and a minimum value of -5. f (r) =

What is the percentile for data value 6 in the following data set? 4 13 8 6 4 4 13 6 4 13 2 13 15 5 9 4 12 8 6 13 40 25 35 62

When solving this problem: 3025/5.5 = a/90.75 you get 49912.5 which would be the length of one of the sides of a square when the area is only 90.75 inches. is that answer correct, why, and how is it possible?