Let P(t)=900(0.5)^t be the amount of bacteria in an experiment t hours after the experiment started. What is the half-life for the bacteria? (Round to two decimal places.)

anyone? find the second, fifth, and ninth terms of a sequence where the first term is 65 and the common difference is -7. 72, 93, 121 72, 79, 86 58, 37, 9 58, 51, 44

Thelime contains the point(-3,0) and parallel x-3y=3( show all work)

Fatima plans to spend at least $15 and at most $20 dollars on sketch pads and pencils. if she buys 2 sketchpads, how many pemcils can she buy while staying in her price range? fatima can buy between and pencils. ? (type whole numbers. use ascending? order.)