Find the value of x
11x-1+20x-3=151

What is the slope of the line that contains the points (4,8) and (9,8)? what type of line is it?

If 20% of a number is 35, what is 50% of that number?

Carl's candies has determined that a candy bar measuring 3 inches long has a z-score of +1 and a candy bar measuring 3.75 inches long has a z-score of +2. what is the standard deviation of the length of candy bars produced at carl's candies?