A22-ounce bowl of crackers contains 18 percent cheese crackers. aida computed 18 percent of 22. her work is shown below.

18 percent of 22

which statement explains aida’s error?
aida did not use 0.18 for 18 percent.
aida did not multiply 1.8 and 22 correctly.
aida did not use 0.018 for 18 percent.
aida did not move the decimal point three places to the left in the answer.

Satchi found a used bookstore that sells pre-owned dvds and cds. dvds cost $9 each, and cds cost $7 each. satchi can spend no more than $45.

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 difference of two numbers is 40. find the numbers if 0.3 parts of one number is equal to 37.5% of the other one.