Ive asked this question 5.. times please someone help its already late.

A. 4

Step-by-step explanation:

the angle that 10 is in is an acute angle

acute angles are below 90 degrees

so 4 x 10 is 40 which is below 90

so since it is the only thing below 90

Its the answer

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.