Which expression has a negative value? A) -1x-2
B) -1x2x-3x4x-5
C) 1x-2x-3x-4x-5
D) 1x-2x3x-4x5

Sal is tiling his entryway. the floor plan is drawn on a unit grid. each unit length represents 1 foot. tile costs $1.35 per square foot. how much will sal pay to tile his entryway? round your answer to the nearest cent.

Name the quadrilaterals that have four equal sides.

Which expression is equivalent to 2x^2+7x+4?