Three planets are in line and are orbiting round a sun, one take 1 week to orbit the sun another takes 9 weeks and the other takes 27 weeks. when is the next time they will all be in alignment?

What term makes it inconsistent y=2x - 4

Write the equation for the parabola that has x− intercepts (−2,0) and (4,0) and y− intercept (0,4).

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)