Please help with this. I cannot figure out the units. the pi is 36pi

Anthony is making a collage for his art class my picking shapes randomly. he has five squares, two triangles, two ovals, and four circles. find p( circle is chosen first)

You buy five cds at a sale for $5.95 each. write an expression for the total cost of the cds.then use the distributive property and mental math to evaluate the expression.

Five infinity stones cost $16.80. what is the price per infinity stone ?