The quadratic equation y equals short dash 16 t squared plus 56 t plus 2 represents the height of a projectile, y, in feet, at a particular time, t, in seconds. For what interval or intervals of time will the projectile be above 26 feet?

The intervals of time will be and 3 s.

Step-by-step explanation:

Given quadratic equation is

where y represents the height in feet, at a particular time, in second.

When a object is thrown upward direction,after a certain time it will attain the height 26 feet. Then when the object comes down it will again attain the height 26 feet.

To find the the time intervals, we put y= 26 in above quadratic equation.

The intervals of time will be and 3 s.

graph them on a graphing calculator, press 2nd trace. select intersect. hit enter until it says answer. ti 84 works best

step-by-step explanation: