a drawing of a surfboard in a catalog shows it's length as 8 4/9 inches. find the actual length of the surfboard if 1/2 inch length on the drawing corresponds to 3/8 foot of actual length.

For the function, f(x) = -5x 2, find f(-4).

2people are trying different phones to see which one has the better talk time. chatlong has an average of 18 hours with a standard deviation of 2 hours and talk-a-lot has an average of 20 hours with a standard deviation of 3. the two people who tested their phones both got 20 hours of use on their phones. for the z-scores i got 1 for the chatlong company and 0 for talk-a-lot. what is the percentile for each z-score?

What are the solutions of the equation? z^2 + 11z + 24 = 0 a. 8, -3 b. 8, 3 c. -8, -3 d. -8, 3