Posted by Crystal on Tuesday, July 14, 2009 at 12:37am.
.04x + 720 - .06x ≥ 650
-.02x ≥ -70
x ≥ -70/-.02
x ≥ 3500
Shouldn't the answer be less than or = to?
yes, of course you are right.
When dividing by a negative we have to reverse the inequality sign.
Time for my third cup of coffee.
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