Domain of 
are the values of x for which 2x + 1 < 0
2x < -1
x < -1/2
Therefore, domain is all real numbers less than -1/2
2x < -1
x < -1/2
Therefore, domain is all real numbers less than -1/2
You pay $2.40 for 3/4 pounds of grapes . Your friend buys a pound of grapes at the same time and estimates that he will pay $1.8
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