Average Value of FUnctions multiple choice questions. can someone please help? Ive been staring blankly at my screen for like an hour lol

Which statement is true for a positive valued function x)? 0 The average value of the function between (a, b}, is the area under the curve of f(x) between (a, b). O The average value of the function between (a, b), is the area under the curve of f(x) between (a, b) divided by (b-a). O The average value of the function between (a, b}, is the average of f(b) and f(a). O The average value of the function between (a, b), is the area under the curve of f '00 between (a, b). If an object's movement, distance over time, is modeled as d(t), then which of the following can be used to describe the average velocity of the object? O The average value of d '(t). O The Mean Value Theorem applied to d(t). O The Mean Value Theorem applied to d '(t)_ O The average value of d(t). What is the average value of f(x) between x = 3 and x = 5 where f(x) = 4*? O 364.25 O 354.25 O 346.25 O 340.25Bob is running a fever that goes up and down with medication. His temperature is modeled as f(x) = 101 + 33in(t), where t is in hours starting at midnight. What is his average temperature between 4 and 8 am? 0 100.61 0 101 0 101.314 0 103 Electric usage over the course of a day varies. The graph shown is of electricity costs per hour. Cost per hour 20 18 16 Cost $ ONACOGNE 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Time(hours) What is the average cost between t = 17 and t = 20 hours? O $12/hr O $14/hr O $16/hr O $18/hrA ball is thrown off a building which is 4 meters high, at time t = 0, and d(t) = -t2 + 4 is the height of the ball. What is the average height of the ball between time t = 0 and t= 1'? O 4.667 O 4.25 O 3.667 O 3.5