Ian has 67 baseball cards. If he buys c cards each week for w weeks, what is the total number of cards he will have?
[1] 67cw
[2] 67+cw
[3] 67c+w
[4] 67+c+w
Try to answer this question first:
He starts with 67 baseball cards. If he buys 3 cards each week for 2 weeks, what is the total number of cards he will have?
okay
+-9 
