Which statement describes the rate of change of the following function? f(x) = -4x - 8

A.
The function has a constant rate of change, decreasing for all x at a rate of 8.
B.
The function has a varying rate of change when x < 4.
C.
The function has a constant rate of change, decreasing for all x at a rate of 4.
D.
The function has a varying rate of change when x < 8.

Which expression is equivalent to (9x - 3 1/ + 1 3/8)

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The swimming pool is open when the high temperature is higher than 20∘c. lainey tried to swim on monday and thursday (which was 3 days later). the pool was open on monday, but it was closed on thursday. the high temperature was 30∘c on monday, but decreased at a constant rate in the next 3 days. write an inequality to determine the rate of temperature decrease in degrees celsius per day, d, from monday to thursday.