Write the expression below.
divide the sum of 9 and 6 by 6

The poll report includes a table titled, “americans using cash now versus five years ago, by age.” the age intervals are not equal. why do you think the gallup organization chose the age intervals of 23–34, 35–54, and 55+ to display these results?

Solve the inequality 47.75 + x 50 to determine how much more weight can be added to li's suitcase without going over the 50-pound limit. what is the solution set?

The length of time for one individual to be erved at a cafeteria is a random variable having an ex- ponential distribution with a mean of 4 minutes. what is the probability that a person will be served in less than/3 minutes on at least 4 of the next 6 days?