Question

help with apex please?
question is in the comments.

Answer 1

and what are your thoughts?

Answer 2

i was thinking it was < or equal to-1 because it says x-1 so i was thinking it would be..because i honesty dont get how they want me to work it

Answer 3

well, two things we have to recall,

its a division problem so what do we not want to divide by?

we also have sqrts, what make sqrts go bad?

do you know the answers to these?

Answer 4

positive 1.
and if yu cant reduce it evenly

Answer 5

dividing by zero is bad, 8x^2 being zero is going to be a sore spot for us.

8x^2 = 0, well, only if x=0, and none of the options include zero so thats pretty much a wash.
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sqrts go bad if their arguments are negative.

8x^2 is never going to be negative, so the only real question is, when is:

28(x-1) >= 0

Answer 6

at this point, you can simply trial and error the options.

28(-1-1) >= 0
or
28(1-1) >= 0

Answer 7

so it would be >1

Answer 8

almost :)

x=1 works for us, so we include it as well

x >= 1

Answer 9

28(x-1) >= 0 , divide off the 28

x-1 >= 0 , add off the -1

x >= 1