The future value (F, in dollars) of P dollars invested today in the stock market is given by F=P(1+r)^t where r is the annual rate of interest earned by the investment (in percent) and t is the number of years the investment is allowed to grow. If I have $25,000 to invest today in a mutual fund that expects to earn 8% interest per year, how many years will it take for the fund to grow to $2,000,000?

Sales at a fast-food restaurant average $6,000 per day. the restaurant decided to introduce an advertising campaign to increase daily sales. to determine the effectiveness of the advertising campaign, a sample of 49 days of sales were taken. they found that the average daily sales were $6,300 per day. from past history, the restaurant knew that its population standard deviation is about $1,000. if the level of significance is 0.01, have sales increased as a result of the advertising campaign? multiple choicea)fail to reject the null hypothesis.b)reject the null hypothesis and conclude the mean is higher than $6,000 per day.c)reject the null hypothesis and conclude the mean is lower than $6,000 per day.d)reject the null hypothesis and conclude that the mean is equal to $6,000 per day.expert answer