What is the maximum height, in feet, the ball will attain?

Step-by-step explanation:

We know that the equation that models the height of a projectile as a function of time is:

Where:

is the initial velocity

is the initial height of the projectile.

In our case, the height of the machine is 2 ft.

Then

The initial speed is 120 ft/s.

So the equation of the height for this case is:

This is a quadratic equation whose main coefficient is negative.

The maximum value of the function is at its vertex.

For a quadratic function of the form:

the vertex of the equation is given by the expression:

In this case:

Then the maximum point occurs instantly:

Finally the maximum atura is:

4

step-by-step explanation:

answer: all of the odd numbers were opened

the first person was the one that was opening all of the lockers. since one is odd, this causes all of the odd number lockers to be opened in the end.