1, 2, 3, or 4​; the second digit can only be 0, 1, or 2​; and there are no restrictions on the remaining digits. How many different area codes are​ possible?       Express the number of area codes as a product.   Total number of area codes​ = nothing ​(Do not​ multiply.)

The Moore family received 31 pieces of mail on April 27. The mail consisted of letters, bills, magazines, and ads. How many letters did they receive if they received three more bills than magazines, the same number of letters as magazines, and five more ads than bills? Keypad Answer Keyboard Shortcuts letters

in a dog park, there are 84 total legs. If there are 3 more dogs in the park than people, how many dogs are in the park? 17 dogs 12 dogs 13 dogs 14 dogs 15 dogs

Ryan is washing windows on a skyscraper. He lowers himself six times, going down an equal distance each time. In all, Ryan lowers himself 48 ft. What integer represents the change in Ryan's position each time he lowers himself?