In American football, the ball is punted by dropping and kicking it before it hits the ground.
The height h(t) of the football above the ground in meterst
seconds after being punted is affected by gravity and by the punter's kick,
and can be represented as the difference of two functions: a (t) 4.91",
which specifies the effect of gravity on the height of the ball, and v (t) 12.12 +2.5, which specifies the effect of the punt on the ba
With these two functions, h(t) == v(t) a(t), how high above the ground was the ball when it was punted?

think the answer is 30 degrees. if not than it is 20 degrees. not 100% sure. let me know if it was right.

gill russ

except if the answer is in the value of money, then, it will matter. it will have to be $0.40, but i can tell this is not a money question, so .4 should be the right one.

answer: $53750

steps:

list the principal and interest after the n-th year:

n       principal   simple interest

1     12500     375

2     25000     750

3     37500     1125

4     50000     1500

sum: $50000     $3750

total at end of year 4: $53750