Aschool spent $2,587.50 on agendas for its 1,150 students. what is the unit price per agenda

Find and simplify an expression for the area of five rows of x squares with side lengths of x centimeters.

Which expression demonstrates the use of the commutative property of addition in the first step of simplifying the expression (-1+i)+(21+5i)+0

What is the length of the segment, endpoints of which are intersections of parabolas y=x2? 11 4 x? 7 4 and y=? 7 8 x2+x+ 31 8 ?