How do i play Among Us? i need help because its my first time playing it

Use the elimination method to find the solution to the system of equations. 2x - 3y = -9 -x + 3y = 6

For how answer my question this will be the last question can you answer in math subject

Aball is thrown from a height of 139 feet with an initial downward velocity of 15 ft/s. the ball's height h (in feet) after t seconds is given by the following. h=139-15t-16t^2 how long after the ball is thrown does it hit the ground? round your answer(s) to the nearest hundredth. (if there is more than one answer, use the "or" button.) t =