Bobby purchased pens at the rate of $42 per half a dozen. I he earned a profit of 10% by selling them on eBay. What was his selling price per dozen? (with explanation)

State if the two triangles are congruent. if they are, state how you know?

Which type of graph would allow us to compare the median number of teeth for mammals and reptiles easily

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.