What is the slope of the line through (3, 3) and (0, 12)? Pls help due soon

What is the inverse of the function f(x) = 2x + 1?

Can anyone me with 32,33,36,37,and 40.

The weight of full–grown tomatoes at a farm is modeled by a normal distribution with a standard deviation of 18.4 grams. the 95 percent confidence interval for the mean weight of the tomatoes is calculated using a sample of 100 tomatoes. what is the margin of error (half the width of the confidence interval)?