What are the domain and range of f(x) = 2(3x)?

Nick and nora are married and have three children in college. they have an adjusted gross income of 47,400. if their standard deduction is 12,600 itemized deductions are 14,200 and they get an exemption of 4000 for each adult and each dependent what is their taxable income

Credit card a offers an introductory apr of 3.4% for the first three months and standard apr of 15.7% thereafter,

Which shows the graph of the solution set of 3y – 2x > –18?