Alg 2 Lesson 2-2

Fill in the Blank

What is the vertex of the graph of the function $$f\left(x\right)=x^2-8x+5?$$   (page 36 in your workbook) Answer as an ordered pair.

Multiple Choice

Use key features to graph $$f\left(x\right)=x^2-6x-1$$   on page 36 of your workbook. Afterwards, choose the correct graph.

Fill in the Blank

A water balloon was thrown from a window. The height of the water balloon over time can be modeled by the function $$y=-16x^2+160x+50.$$   What was the maximum height of the water balloon after it was thrown? (example 3 on page 36)

Fill in the Blank

How long did it take the water balloon to reach its max height of 450 feet? Be sure to include the unit of time in your answer.