Provide an Appropriate Response $\$ 1.29$ Each, 3 Blue Pens At $\$ 1.49$

Multiple Choice

Provide an appropriate response.
-Jim buys his school supplies in bulk. On one particular shopping trip he bought 5 red pens at $\$ 1.29$ each, 3 blue pens at $\$ 1.49$ each, 6 green pens at $\$ 1.79$ each and 9 black pens at $\$ 0.99$ each. What was the average cost of a pen?

A) $\$ 1.33$
B) $\$ 1.29$
C) $\$ 0.99$
D) $\$ 1.39$ 3 Approximate the Variance and Standard Deviation of a Variable from Grouped Data