Write an expression for “the difference of 10 and z”

The mean of a set of data is -3.82 and its standard deviation is 2.31. find the z score for a value of 3.99.

Which of the following scenarios demonstrates an exponential decay

The scatter plot shows the number of animal cells clara examined in a laboratory in different months: plot ordered pairs 1, 20 and 2, 60 and 3,100 and 4, 140 and 5, 180 what is the approximate predicted number of animal cells clara examined in the 9th month?