Corrections. Questions.

10.

t = time
h(t) =147t-16t^2

put that in graphmatica
change window settings

when does the ball reach the height?
337.6ft at 4.6 seconds.

When does it hit the ground again?
9.2 seconds, times 4.6 times 2. parabla
Symmetry


~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

11.

y=4x/3 - x^2/90

Back to graphmatica, put the y= thing in..
graph should show up.

Whats the max height of the football?
40 feet

How long far does it go to hit the ground?
120 feet

Will the football fall into the crossbar?
its kicked from the 35 yrd line, (35 x 3) = 105 ft.
But, The kick is successfull.

How far would the ball be above the crossbar?
2.5 feet.

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
12.

total revenue = (# of fares###)(#cost per ride$$$)

Let x= # of $1 fare increases
Let y = total revenue of $

y= (300-15x)(10+x)
Check the blogs....
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~