If y=-4 when x=8, find x when y=-2

An objects motion is described by the equation d= 4sin (pi t) what will the height of the object be at 1.75 seconds?

Donald has x twenty-dollar bills and 11 ten-dollar bill. how much money does donald have? write your answer as an expression.

Which question is not a good survey question? a.don't you agree that the financial crisis is essentially over? 63on average, how many hours do you sleep per day? c. what is your opinion of educational funding this year? d.are you happy with the availability of electronic products in your state?