#2**0 **

Sorry, I accidently labeled it trig because this question is part of my trig test.

kawaiiai May 11, 2019

#3**+1 **

Here's my best shot, K

P(win both races) = (.25)(.35) = .0875

P(win one of the two races) = P(win 1st, lose second) + P(lose first, win second) =

(.25)(.65) = .1625 + (.75)(.35) = .2625

So (.1625 + .2625) = .425

P(lose both) = (.75)(.65) = .4875

Expected value =

100000(.0875) + 60000(.425) + 15000(.4875) - 25000 =

$16,562.50 ⇒ D

CPhill May 11, 2019