In the year 2010, a company made $3.2 million in profit. For each consecutive year after that, their profit increased by 11%. How much would the company's profit be in the year 2013, to the nearest tenth of a million dollars?

Simplify the expression. -2/5(10+15m-20n)

Gravel is being dumped from a conveyor belt at a rate of 25 ft3/min, and its coarseness is such that it forms a pile in the shape of a cone whose base diameter and height are always equal. how fast is the height of the pile increasing when the pile is 14 ft high? (round your answer to two decimal places.) ft/min

Given the expression (7 ? 4i) ? (2 + 6i), perform the indicated operation and write the answer in the form a + bi.