—————–

The height h in feet of an object after t seconds is given by the function

h = –16t2 + 40t + 10.

How long will it take the object to hit the ground? Round your answer to the nearest thousandth.

Question 2:

—————-

Find the constant term that should be added to make the following expression a perfect-square trinomial.

x2 + 2x

Question 3:

——————

Identify the axis of symmetry, create a suitable table of values, then sketch the graph (including the axis of symmetry).

y = –x2 + 3x – 3

Question 4:

—————

Identify the axis of symmetry, create a suitable table of values, then sketch the graph (including the axis of symmetry).

y = x2 – 4x

Question 5:

—————

The length of a rectangle is 1 cm more than 2 times its width. If the area of the rectangle is 76 cm2, find the dimensions of the rectangle to the nearest thousandth.