The first astronaut on mars tosses a rock straight up. The height, h, measured in feet after t seconds, is given by the function h(t) = -6^2+24t+6. A. After how many seconds will the rock be 30 feet above the surface?
B. After how many seconds will the rock be 10 feet above the surface?
C. How many seconds will it take for the rock to return to the surface?
D. The same action on earth is modeled by the equation g(t) = -16t^2+24t+6. On earth, how many seconds would it take for the rock to hit the ground?

x=-2

step-by-step explanation:

i began by flipping the problem to give me x= on the left (keeps it clearer for me).   so my problem simply became 10x-3=4x-6.  

1)   subtract 4x from the right side, which equals 0.   you do the same to the left of the equal as the right; therefore, subtract 4x from 10x, leaving 6x on the left.

              10x-3=4x-6   :   4x-4x on the right leaves only the -6        

2)             6x-3= 0-6 :    

                6x+3=   -6

3) divide

1,00,800

step-by-step explanation: