Write an expressions that is equivalent to p + p − 12

(help pls this is for a pop quiz-)

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

Is there an x intercept in the equation 60*1.15^x

What three-dimensional solid have 6 rectangular faces, 2 equal bases that are not rectangles and 18 edges