PLEASE HELP I AM BEGGING YOU

Write the system of equations represented by the matrix. 0 1 2 4 -2 3 6 9 1 0 1 3

Which of the following answers is 7/9 simplified? 7/9 2/9 11/9 2/7

The chs baseball team was on the field and the batter popped the ball up. the equation b(t)=80t-16•16+3.5 represents the height of the ball above the ground in feet as a function of time in seconds. how long will the catcher have to get in position to catch the ball before it hits the ground? round to the nearest second