All quadrilaterals have at least one pair of congruent sides.

Which of the following is a counterexample to this conjecture?
A. a rectangle that is not a square
B. a parallelogram that is not a rhombus
C. a trapezoid that is not isosceles
D. a parallelogram that is not a rectangle

What is the slope of a line that is perpendicular to y = 3x + 1

Which of these tools or constructions is used to inscribe a hexagon inside a circle?

Tom is the deli manager at a grocery store. he needs to schedule employee to staff the deli department for no more that 260 person-hours per week. tom has one part-time employee who works 20 person-hours per week. each full-time employee works 40 person-hours per week. write and inequality to determine n, the number of full-time employees tom may schedule, so that his employees work on more than 260 person-hours per week. graph the solution set to this inequality.