Trey's coffee shop makes a blend that is a mixture of two types of coffee. type a coffee costs trey $4.80 per pound, and type b coffee costs $5.85 per pound. this month's blend used three times as many pounds of type b coffee as type a, for a total cost of $603.45 . how many pounds of type a coffee were used?

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.