irene bought p pencils and a binder that cost $2.55. write an expression to model the amount irene spent. write an expression to model the amount irene spent.

The graph represents the gallons of water in a water tank with respect to the number of hours since it was completely filled

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)?

How much dextrose 70% must be mixed with dextrose 5% to prepare 1,000 ml of dextrose 20%?