Shari rented a bike from arjun's bikes. it cost 14 dollars plus 3 dollars per hour. if shawna paid 32 dollars then she rented the bike for how many hours?

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)?

Four congruent circular holes with a diameter of 2 in. were punches out of a piece of paper. what is the area of the paper that is left ? use 3.14 for pi

How do you find the circumfrance of a circle?