Over which interval is the graph of f(x) = x2 + 5x + 6 increasing?

Step-by-step explanation:

Given is a function

Since leading term is positive,

the parabola is open up.

Let us write this in vertex form after completing the square

Hence we get vertex= (-5/2,-1/4)

Since this is a parabola open up we have the minimum point is only one at x=-5/2

So we have the function decreasing for x<-2.5 and increasing for x>-2.5

Decreases in

Increases in

wholesale price is the initial price before markup. retail price comes after the markup.

a price of 8 bucks that's marked up by 100%   is

formula: initial price + (percent markup in fraction/decimal)(initial price)

8+(1)(8)

8+8

16

retail price is $16.