Plz help me ASAP thxs

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

Afamily went out to dinner and their bill was $113.if they want to leave a 19% tip, how much should they leave.

Find the circumference of a pizza with a diameter of 10 inches round to the nearest tenth