1. The cost C (in dollars) per unit of making x photocopies at The Office Shop is given below. • 18 cents for at most 20 copies
• 12 cents for more than 20 copies up to 50
• 9 cents for more than 50 copies but less than 100
• 5 cents for 100 copies or more but up to 200
• 3 cents for more than 200 copies

Part A: Write the piecewise-defined function that represents the situation.

What is the difference between regular convex and concave polygons

Ametal rod needs to be 9 feet and 5.5 inches in length. the sections of the poles being used are each 1 foot and 10.5 inches long. how many 1ft 10.5in sections would be needed to complete the 9ft 5.5in metal rod? and how many inches of material will be left?

Which statement explains how you could use coordinate geometry to prove the opposite sides of a quadrilateral are congruent? a. use the slope formula to prove the slopes of the opposite sides are the same. b. use the slope formula to prove the slopes of the opposite sides are opposite reciprocals. c. use the distance formula to prove the lengths of the opposite sides are the same. d. use the distance formula to prove the midpoints of the opposite sides are the same.