Help! I need to know the answer because 3:50

If olu is twice as old as funmi if the sum of their ages is 60 how old is olu

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)

Convert the mixed numbers into improper fractions. convert the improper fraction to mixed numbers.