Suppose you bought something that was priced at $14.30, and the total bill was $15.20. what is the sales tax in this city? (round your answer to one decimal place.) hint: you have several steps to perform. first, find the tax, then the tax rate

What is the greater volume 72 quarts or 23 gallons

What are the solutions to the following equation? |m| = 8.5 the value of m is equal to 8.5 and because each distance from zero is 8.5.

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.