At the beginning of the day the stock market goes up 30 1/2 points at the end of the day the stock market goes down 115 1/4 points what is the total change in the stock market from the beginning of the day to the end of the day

One card is dealt from a 52 card deck. find the probability that the dealt card is a 4 or a black 7

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?

I’m on question 7 it says a covered water tank is in the shape of a cylinder the tank has a 28 inch diameter and a height of 66 inches to the nearest square inch what is the surface area of the water tank