Write a system of equations to describe the situation below, solve using substitution, and fill in the blanks.
Jim works in the shipping department of a toy factory that makes radio-controlled
helicopters. Small helicopters weigh 3 pounds each, and are shipped in a container that
weighs 18 pounds. Large ones, on the other hand, weigh 5 pounds apiece, and are shipped in
a container that weighs 12 pounds. If these boxes can hold a certain number of helicopters
each, all of the packed containers will have the same shipping weight. How many helicopters
would fit in either container? What would the total weight be?
helicopters, it will weigh a total of
pounds once it is
If either container holds
packed for shipping.

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.