A student randomly selected 71 vehicles in the student parking lot and noted the color of each. She found 23 were BLACK, 4 were BLUE, 15 were BROWN, 12 were GREEN, 11 were RED,
and 6 were a VARIETY OF COLORS. What is the experimental probability that a car selected at
random from these 71 vehicles surveyed WILL NOT be BROWN? (answer as simplified fraction)

The answer simplified would be. -6300x

First, think of what you know. you know that the number t the end of the equation will need to be subtracted because it is the money he lost from buying the lawn mower. and your first two weeks have negative profit, so that tells you that c and d are wrong. now you can plug any of the weeks into a and b to see which one works. i'll start with plugging week 1 into a.this isn't right because it says your answer for week one should be -90.so now we need to try the same thing with b.this one got you the right answer, (sometimes if you only check with one of the weeks multiple will work so you need to check with more of the weeks, but it worked out fine here)this means that b is the correct answer.let me know if you need more clarification. i hope this : )