Determine the zeros of the function 7x^2 + 9x = 0

Question

answers were:
{-9/7}
{-9/7,0}
{o,9/7}
{9/7}

I think the answer is {-9/7,0} but I'm not positive when I worked it-If this is wrong please steer me into the correct calcs because then I don't what I'm doing wrong

2.Solution to absolute value(x-5) <= 3 is x<=8>=2
This would be true according to my calcs Thanks for checking in advance

Answer 1

1. (-9/7, 0)
you are correct

2. correct, but should be written as
2 <= x <= 8