What topic is this and how do you go about it?

Complete the truth table a. t, f, f, t b. t f f f c. f t f t d f t f t

Solve the given system of equations. 2y= -x+9 , 3x-6= -15

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.