Those wind chill formulas are REALLY complex.
Attached are the formulas for wind chill (F and C) plus the OLD wind chill formula.
Here's a wind chill calculator I wrote. http://www.1728.org/windchil.htm
(I figured you might need all the help you can get.)
Answer:
B
Step-by-step explanation:
It's not A since quadratic functions can never cross the x axis more than once.
It's not C since quadratic functions can never cross the x axis more than once.
It's not D since horizontal lines are never functions, even more quadratic functions.
4k^2=5k
4k^2-5k=0
k(4k-5)=0
4k-5=0 => x2=5/4=1.25
k=1.25
First way 56/110
Second Way 28/55
The problem is: d=rt
you are solving for r
d=rt
-- --
t t
you divide both sides by r, so your answer is:
d/t=r or r=d/t
I hope this helped! :))