Over which interval is the graph of f(x)=1/2x2+5x+6 increasing?
(-6.5, ∞)
(-5, ∞)
(-∞, -5)
(-∞, -6.5)

The answer to your question is (-5, ∞)

Step-by-step explanation:

A curve decreases when it goes down from left to right.

A curve increases when it goes up from left to right.

In the graph, we notice that it goes down from -∞ to the vertex (-5, -6.5)

And it goes up from the vertex (-5, -6.5) to +∞.

So the answer is (-5, ∞)

19.

step-by-step explanation:

you add the 9 in the tens column since it is a single digit and 9 plus zero is 9 so it is 19

c.

step-by-step explanation:

because first you have to add the 4x, 9x, and the 7x together and you get 20x and then you add the last numbers up and you get 5and then you put the subtraction sign in there and that's how you get the answer.