How many times greater is 9 times 10 to the 5 power than 8 times 10 to the 2 power

Last one and the bottom answer choice is y=(x-4)^2+1 you guys!

Recall that the owner of a local health food store recently started a new ad campaign to attract more business and wants to know if average daily sales have increased. historically average daily sales were approximately $2,700. the upper bound of the 95% range of likely sample means for this one-sided test is approximately $2,843.44. if the owner took a random sample of forty-five days and found that daily average sales were now $2,984, what can she conclude at the 95% confidence level?

Mr. walker is looking at the fundraiser totals for the last five years , how does the mean of the totals compare to the median?