College Algerbra
posted by Eric .
Solve the inequality. 0.1(0.1x+0.1) _< 0.8

College Algerbra 
Reiny
Hint: multiply both sides by 10 and proceed like I showed you in the last one

College Algerbra 
Eric
I got the answer x >_ 81, is that correct?

College Algerbra 
Reiny
looking at all those positive numbers on the left, there is no way the inequality sign could have changed.
I am assuming your _ < is ≤ ??
.1(.1x + .1) < .8
times 10
.1x + .1 ≤ 8
times 10 again
x + 1 < 80
x≤ 81 
College Algerbra 
Eric
Thanks Reiny, you assumed correct, how did you get the line under the greater than sign? You are a very smart and kind woman to have been such a great help, Thanks!

College Algerbra 
Reiny
I answer most of the questions on a Mac, where I hold down the "option" key as I press the <
There are combinations of key like that on the PC also, I don't have the list handy right now.
BTW, I am an old retired guy, not a woman. 
College Algerbra 
Eric
Sorry Mr. Reiny, I guess I should of figured that out since you are so smart at doing the math problems. I do not have an option key on my windows 7 keyboard but I bet there is another way I can do the underline thing. Thanks Again for taking time out of your day to help us Mathematically Challenged students, God Bless You!
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