The complimentary event is the probability of it not raining. The probability of that is 1-2/5 = 3/5.
A, it crosses the y-intercept at (0,3) :)
The answer for this equation is x < 1
It will take 120 feet for the 36mph car to stop
n=2
8+8(8-n)=40+8n (distribute 8 through the parenthesis)
8+64-8n=40-8n (add the numbers)
<em>72-</em>8n=40+8n (move the variable to the left side and change its sign)
<em>72</em><em>-</em>8n+8n=40
-8n+8n=40<em>-72</em> (connect like terms)
-16n = -32 (divide both sides by -16)
<u><em>n=2</em></u>
