All my brainiest and lots of my points dissipeared. Along with my popularity and all the other questions that i have answered? Do you know why this happens?

Find the value of ax 4 ; a = 2, x = 1. select one: a. 2 b. 4 c. 1 d. 8

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 =

If you are trying to move an attached term across the equal sign (=), what operation would you use to move it?