An expression for the balance in an account is given. use a guess, check, and revise strategy to determine the time (in years) necessary for the investment of $800 to double. (revise your answer until it is accurate, rounded to one decimal place.) interest rate: 9% 800(1 + 0.09)t

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)?