If Liana needs $5 to buy 6 mechanical pencils, how much money does she need to buy 7 pencils?

Pls! does anybody know a shortcut for answering these types of questions in the future?

How does a low unemployment rate affect a nation's economy? a. the nation has a higher number of productive resources. b. the nation can spend more money on for unemployed people. c. the nation can save money by paying lower salaries to a large workforce. reset

Jose is going to use a random number generator 500500 times. each time he uses it, he will get a 1, 2, 3,1,2,3, or 44.