Can someone please help me out im confused

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?

What is negative 3/9 times negative 2/8 ?

What is 100,000 times 1/100,000, using the standard method of multiplication? write the answer as 10 to a power.