Sawyer Corporation's 2018 sales were $15 million. Its 2013 sales were $7.5 million. a. At what rate have sales been growing? Round your answer to two decimal places. % b. Suppose someone made this statement: "Sales doubled in 5 years. This represents a growth of 100% in 5 years; so dividing 100% by 5 , we find the growth rate to be 20% per year." Is the statement correct