Quadrilateral and parallelogram
Squares are rectangles but rectangles are not squares b/c (not all sides are same length)
Answer:

Step-by-step explanation:
40ab is 40 multiplied by a multiplied by b
Hello!
To find the price of one marker you divide the price paid by the amount of markers bought
6 / 20 = 0.30
A marker cost $0.30
The answer is $0.30
Hope this helps!