A bank's loan officer rates applicants for credit. The ratings are normally distributed with a mean of 200 and standard deviation of 50. If an applicant is randomly selected find the probability that the rating is: A) between 200 and 275.
B) Above 178.
C) Find the score which separates the lower 60% from the top 40%.

On the first of each month, shelly runs a 5k race. she keeps track of her times to track her progress. her time in minutes is recorded in the table: jan 40.55 july 35.38 feb 41.51 aug 37.48 mar 42.01 sept 40.87 apr 38.76 oct 48.32 may 36.32 nov 41.59 june 34.28 dec 42.71 determine the difference between the mean of the data, including the outlier and excluding the outlier. round to the hundredths place. 39.98 39.22 0.76 1.21

Equation for the calculation double 2 and then add 5

I’ve been trying all day to figure this puzzle out. i need the work for it aswell. it is a factoring polynomials tarsia. the image is below.