Karen is opening a new container of one-a-day vitamins that holds 250 vitamins. each vitamin has 20 mg of phosphorus, which makes up 2% of her daily need. how much phosphorus does karen need in a day? give your answer in scientific notation.

Igor stravinsky tires sells approximately 3,760,000 car tires and 1,200,000 truck tires each year. about 47,000,000 care tires and 26,000,00 truck tires are sold each year in the united states. what is stravinsky's market share in each of these two markets (cars and trucks)?

You have $600,000 saved for retirement. your account earns 5.5% interest. how much, to the nearest dollar, will you be able to pull out each month, if you want to be able to take withdrawals for 20 years?

Apositive number a or the same number a increased by 50% and then decreased by 50% of the result?