Zack bought a coat for $69.78. he paid with a $100 bill and received $26.73 in change. how much was the sales tax?

Problem fathi wants to print out a pdf document that is 48 pages long. to save paper, he decides to print on both sides of each sheet and to print two pages on each side of the sheet. how many sheets of paper will he need?

Which of the following tables represents exponential functions?

To which sets of numbers does -12 belong? choose all answers that are correct. a) natural numbers b) integers c) real numbers d) irrational numbers