Lorenzo went to the store with $20. he bought some cans of soup for $2 each and a gallon of milk for $3. he had $1 left over.
this equation gives s, the number of cans of soup that he bought.
2s + 3 = 20 - 1
how many cans of soup did he buy?

8

11

7

9

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.