35⋅91−35⋅89=
22⋅87+22⋅13=
911⋅710−911⋅310=
Help, please!

Which expression is equivalent to (3^2)^-2 a.-81 b.-12 c.1/81 d.1/12

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.

What is the slope of the line shown below?