The approximate average distances from the sun to Uranus and Venus are listed below: Uranus: 2.87\times 10^{9}2.87×10
9
kilometers
Venus: 1.08\times 10^{8}1.08×10
8
kilometers
How much closer to the sun is Venus? Express your answer using either standard notation or scientific notation.

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?