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