When tecumseh says, "where today is the pequot? where the narragansetts, the mohawks? " he is a. implying that these tribes aren't as brave as their reputations suggest. b. boasting that his tribe had conquered these tribes and can do the same to the whites. c. asking why all the tribes haven't come to the council. d. indicating what happens to tribes that don't unite against the whites.

The correct answer is that he is D. indicating what happens to tribes that don't unite against the whites.

We know this because immediately afterwards he is answering his question: "They have vanished before the avarice[greed] and oppression of the white men" - so he says that this might also happen to the others.

There are 375 star stickers and 125 heart stickers.

There are 500 stickers with 20 stickers per sheet; 500/20 = 25 sheets of stickers.

25% of each sheet is hearts; 25/100(20) = 5 heart stickers per sheet.  5(25) = 125 total heart stickers.

20 stickers per sheet - 5 heart stickers per sheet = 15 star stickers per sheet.  15(25) = 375 total star stickers.