Answer:
Awnser is C
Step-by-step explanation:
We just have to make the top bar seem bigger then it actually is
Using formula sin^2 x +cos^2 x = 1 you get 1 - cos^2(9x) = sin^2(9x)
so in this way this fraction will be rewrited
sin9x/(1-cos^2(9x) = sin9x / sin^2(9x) = 1/sin9x
The height of Zinger 1 after 6 seconds is given by the polynomial

, for t = 6,
so the height is

(feet)
The height of Zinger 2 after 6 seconds is given by the polynomial

, for t = 6,
so the height is

(feet)
At the moment the rockets explode, Zinger 2 is 414-324=90 (feet)
higher than Zinger 1.
Answer: 90 feet
20/100 = 0.2
0.2 * 39.50 = 7.90
They should leave a $7.90 tip.
5/100 = 0.05
39.50 * 0.05 = 1.975 and rounds to 1.98
They should pay $1.98 in sales tax.