Aball is thrown vertically upward with an initial velocity of 48 feet per second. the distance s (in feet) of the ball from the ground after t seconds is s = 48 t -16 t ^2. (a) at what time t will the ball strike the ground? (b) for what time t is the ball more than 32 feet above the ground?

Let w=23 . what is the value of w + 45 ?

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?

Which of the following would be a reasonable estimate for the weight of a pencil? a. 1 × 10^-20 lb b. 1 × 10^20 lb c. 1 × 10^2 lb d. 1 × 10^-2 lb