$35 at a simple interest rate of 2.5% for 2 year. Find the balance

Find the simple interest earned to the nearest cent for each principal, interest rate, and time 735 7% and two and a half years

Which expression calculates the speed in meters per second of an object that travels a distance of 100 m every 20 seconds

Afactory makes propeller drive shafts for ships. a quality assurance engineer at the factory needs to estimate the true mean length of the shafts. she randomly selects four drive shafts made at the factory, measures their lengths, and finds their sample mean to be 1000 mm. the lengths are known to follow a normal distribution whose standard deviation is 2 mm. calculate a 95% confidence interval for the true mean length of the shafts. input your answers for the margin of error, lower bound, and upper bound.