Który z podanych ciągów jest arytmetyczny? a)an=
b) an =
c) an = +1
d) an= 3n+7/10

What is the value of x? enter your answer in the box. (cm)

Oscar and julie ashton are celebrating their 15th anniversary by having a reception hall. they have budgeted $4,500 for their reception. if the reception hall charges a $90 cleanup fee plus & 36 per person, find the greatest number of people that they may invite and still stay within their budget.

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.