Abiologist is researching the population density of salamanders near a pond. the biologist counts 152 salamanders within a radius of 12 mi of the pond. what is the population density of salamanders? enter your answer in the box. use 3.14 for pi and round only your final answer to the nearest whole number.

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.