A student claims that the function f(x) = 3x^4 – x^3 +7 is a fourth-degree polynomial with end behavior of down and down. Describe the error the student made. What is wrong with this statement?

Monthly water bills for a city have a mean of $108.43 and a standard deviation of $32.09. find the probability that a randomly selected bill will have an amount greater than $155, which the city believes might indicate that someone is wasting water. would a bill that size be considered unusual?

Suppose y varies directly with x. write a direct variation equation that relates x and y. then find the value of y when x=12 y=7 when x=3

If f(x) = 3x-2 and g(x) =2x+1 find (f-g)(x)