Over what interval is the function below decreasing? f(x)=2(x+3)^(2)-5

(the interval over which .)

Step-by-step explanation:

The expression is the vertex form equation of a parabola with vertex . This parabola opens upwards if and downwards otherwise.

Rewrite the expression of in this question to fit the vertex form equation above:

.

Compare this expression to the vertex form equation. The vertex of this parabola would be , and the parabola would open upwards since is greater than .

A parabola that opens upwards is decreasing to the left of the vertex and increasing to the right of the vertex. Thus, the in this question would be decreasing for all points with (to the left of the vertex.) That would correspond to the interval .

(3x-8) or (3x+8)

step-by-step explanation:

step-by-step explanation: the answer for wha if rt is 10 centimeters long, and wha is st? it’s 6