b. An investment earns 9% simple interest. What amount of principal is needed to have $4000 after 3 years? Round your answer to the nearest cent. Amount of principal:$

Find the center and the radius of the circle with the equation: x^2-2x+y^2+4y+1=0?

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?

Ron has 8 caps and 4 of his caps are blue. thes rest of his cap are red. how many of ron's caps are red