48 grams of a radioactive substance decayed 15% over the course of 9 weeks. How many grams of the substance were left after the 9 weeks?

If you draw a card with a value of three or less from a standard deck of cards, i will pay you $43. if not, you pay me $11. (aces are considered the highest card in the deck.) step 1 of 2 : find the expected value of the proposition. round your answer to two decimal places. losses must be expressed as negative values.