A mother wants to invest $13000 for her sons future education. She invests a portion of the money in a bank certificate of deposit (CD account) which earns 4% and the remainder in a saving bonds that earns 7%. If the total interest earned after one year is $780 how much money was invested in the cd account

Question 5 spring semester final exam math evaluate

Which shows the correct solution of the equation 1/2a+2/3b=50, when b=30?

The position of a moving particle is given by the position function: f(t)=-9t-t^2-0.2t^3+0.1t^4 0 a. at what time does the particle reverse direction? b. when is the displacement positive? (round one decimal place and answer in interval notation) c. when is the displacement negative? (round one decimal place and answer in interval notation) d. when is the particle’s acceleration positive? (round one decimal place and answer in interval notation) e. when is the particle’s acceleration negative? (round one decimal place and answer in interval notation)