The surface area, S, of a sphere of radius r feet is S = S (r) = 4πr2. Find the instantaneous rate of change of the surface area with respect to the radius r at r = 4.

a. 32pi

b. 16pi

c. 64pi

d. 4pi

Kit said, "On summer vacation, I spent 1 1/3 weeks with my grandma and one week more with my aunt then with my grandma." How many weeks did she spend with her grandmother and her aunt?

The measure of an obtuse angle is represented by the expression 2x + 5. What is a possible value for x? 90 < obtuse < 180 answer choices 87.6 42.3 75.4 35.2

Use mental math to multiply. 12*26

The equation of the line graphed is y=1/5x+2. true or false

The mean tests scores with standard deviations of four English classes are given in the table. Which statement is most likely to be true? The scores from Mrs. Jones's class are the closest to the class mean. The scores from Mrs.

What is 12:478 12:336 33:2242 82:5514 61:5320 28:776 and 23:1624

To win the jackpot, 4 different numbers are randomly selected from 1 to 46 and one number from 1 to 22. The order of the first 4 numbers does not matter. What is the probability of winning the jackpot on one try?

Scores on an English test are normally distributed with a mean of 30.6 and a standard deviation of 6. Find the score that separates the top 59% from the bottom 41%

What is the input for inverse trigonometric functions

F (t) = - (t-2) (t - 15) What is the vertex of the parabola?