The function models the amount of money a new business has made over x months. Negative values represent loans taken out. Over what interval is the amount increasing? x LaTeX: y=-\frac{1}{2}x^2y = − 1 2 x 2 (x, y)
-4 -8 (-4,-8)
-2 -2 (-2,-2)
0 0 (0,0)
2 -2 (2,-2)
4 -8 (4,-8)

X=

The probability that a u.s. resident has traveled to canada is 0.18 and to mexico is 0.09. a. if traveling to canada and traveling to mexico are independent events, what is the probability that a randomly-selected person has traveled to both? (page 109 in the book may ) b. it turns out that only 4% of u.s. residents have traveled to both countries. comparing this with your answer to part a, are the events independent? explain why or why not. (page 119 may ) c. using the %’s given, make a venn diagram to display this information. (don’t use your answer to part a.) d. using the conditional probability formula (page 114 in the book) and the %’s given, find the probability that a randomly-selected person has traveled to canada, if we know they have traveled to mexico.