The graph of which function is decreasing over the interval (-4, ..)?
&
f(x) = (x + 4)2 + 4
f(x) = -(x + 4)2 + 4
f(x) = (x – 4)2 - 4
f(x) = -(x – 4)2 - 4
N

In a box lenght 1m breadth 60 cm and height 40 cm small rectangular packets of dimension 5 cm into 8 cm into 10 cm are packed. how many such small packets can be packed in the big box?

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?

Rewrite the following quadratic functions in intercept or factored form. show your work. y = 5x^2 + 10x