If f(x)=-4x^2 + 5x and if g(x)=2x^2 what is (f ○ g) (4)

*i remember my teacher saying the open circle does not mean multiply?

Of four points are collinear, they are also coplanar

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?

What is the measure of the smallest angle in the diagram? 15 29 32 45