and then Kelly dove from a 20-foot cliff into the swam back up to the surface. Which of the following best describes the point where Kelly was at the surface of the ocean? O A. The point is at an elevation of 15 feet. O B. The point is at an elevation of 20 feet. O C. The point is at an elevation of O feet. OD. The point is at an elevation of -20 feet.

y=mx+b

step-by-step explanation:

m is slope, b is y-intercept

40 minutes

step-by-step explanation:

add the time and multiply by 2

1 number

if we use a graphing calculator, there is only one such number that satisfies the conclusion of the mean value theorem, that is, a number such that

where the right-hand side is the average rate of change of f on the interval [0.5,0.75], which is the slope of the secant line.

in the attached graph, the black line is the secant line which has its slope as the average rate of change of f on [0.5,0.75], while the orange line is the only tangent line to the graph of f in the interval that satisfies the mvt conclusion.