At its highest
point, the elevation of a county is 5,762 feet
above sea level. At its lowest point, the elevation
of the county is 9 feet below sea level.
a. Write an expression using integers to
represent the difference between the
elevations.
b. Will the answer be written as a positive or
negative integer?
c. What is the difference between the highest
and lowest points of the county?

7.(03.01 lc)which set represents the range of the function shown? {(-1, 5), (2,8), (5, 3), 13, -4)} (5 points){-1, 2, 5, 13){(5, -1), (8, 2), (3,5), (-4, 13)){-4, 3, 5, 8}{-4, -1, 2, 3, 5, 5, 8, 13}

An automated water dispenser fills packets with one liter of water on average, with a standard deviation of 5 milliliter. the manual says that after a year of operation the dispenser should be tested to see if it needs recalibration. a year later a number of filled packets are set aside and measured separately. it is found that the average packet now contains about 0.995 liters. does the dispenser need calibration? explain your answer.

If c(x) = 4x – 2 and d(x) = x2 + 5x, what is (cxd)(x)