PLEASE HELP...My motor B, is -16x^2+210x-690 , How many seconds does it take for the water from this motor to return to the ground? the x- intercept is -210/-16 ?? help please

Question

PLEASE HELP...My motor B, is -16x^2+210x-690 , How many seconds does it take for the water from this motor to return to the ground?  the x- intercept is -210/-16 ?? help please

tkhunny · Answer

If only I could understand the question.  There should be two x-intercepts.  You actually have zero.

anonymous · Answer

x=0, x=210/16

anonymous · Answer

@tkhunny

anonymous · Answer

oh my im rather dumb, im sorry i forgot to close this answer i already got the answer. thank you for your attempt though !

tkhunny · Answer

No worries.  I still wish I understood the question.

anonymous · Answer

do you want me to better word it for you so that you can try the answer ?