Points for the love of people

Write two subtraction equations that are equivalent to 5 + 12 = 17.

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)?

Acomputer store bought a program at a cost of $10 and sold it for $13. find the percent markup