The function f(x) = –x2 − 2x + 15 is shown on the graph. what are the domain and range of the function?

the domain is all real numbers. the range is {y|y < 16}.
the domain is all real numbers. the range is {y|y ≤ 16}.
the domain is {x|–5 < x < 3}. the range is {y|y < 16}.
the domain is {x|–5 ≤ x ≤ 3}. the range is {y|y ≤ 16}.

First, you can simplify the function finding the perfect square:

This form of function gives you the coordinates of parabola vertex - (-1,16).

From the diagram you can see that all values for x are possible, then the domain is (all real numbers). Also you can see that values of y decrease from y=16 to , then the range is (or {y|y ≤ 16}).

correct choice is B.

she played for 18.75 hours.

step-by-step explanation:

if she played 2/4 of a hour on tuesday. and there is 60 minutes in an hour and 60 divided by 4 is 7.5. and she played 2/4 of an hour on thursday then again 60 divided by 4 is 7.5, you add 7.5+7.5=56.25. now you have to do 1/4 of an hour, it equals 3.75. now you have to add them all up. 3.75+7.5+7.5=18.75

i hope this and i hope you get it right. it took me a while to get this done for you. : )

l.ln.lln.k.nkl

step-by-step explanation: