Asmall acting club have 7 members. two of the members are to be chosen for a trip to see a broadway play. how many different 2 member groups are possible?

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

The circumference of a redwood tree trunk is 20π ft, and it is 100 ft tall. what is the approximate volume of the redwood tree trunk? 1,000π ft3 10,000π ft3 4,000π ft3 40,000π ft3

How many sides does a regular polygon have if each exterior angle measure is 45 degrees explain your answer, i really don't understand this.