An elementary school buys tickets for a field trip to the zoo. the number of children going on the field trip is 2 times the number of adults. tickets for children cost $4 each and tickets for adults cost $6 each. the total cost of all of the tickets is $1650, how many tickets of each type did the school purchase? set up and solve this problem following the steps below:

Tom had a total of $220 and he spent $35 on a basketball ticket . what percent of his money did he have left?

In a survey of 1015 adults, a polling agency asked, "when you retire, do you think you will have enough money to live comfortably or not. of the 1015 surveyed, 534 stated that they were worried about having enough money to live comfortably in retirement. construct a 90% confidence interval for the proportion of adults who are worried about having enough money to live comfortably in retirement.

The graph of f(x) is obtained by reflecting the graph of f(x)=-3|x| over the x-axis. which equation describes f(x)? a) f(x)=3|x| b) f(x)=|x+3| c) f(x)=-3|x| d) f(x) = - |x+3|