Criminal Sentence 568: From and To

From a blog post:

"The event draws anywhere from 90-150 people."

Of course we understand this sentence, but since I'm picky, I need to say something about it!

If you have a "from," then you need a "to":

"The event draws anywhere from 90 to 150 people."

Another option is just a hyphen:

"The event draws 90-150 people."

You get to choose which one you like, but you can't mix them as in "from 90-150."