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Question

Nadine can send or receive a message for $0.15 or get an unlimited number for $5.00. Write and solve an inequality to find out how many messages she can send and receive so the unlimited plan is cheaper than paying for  each message.

Answer 1

(0.15 dollars / message) * (x messages) > 5 dollars

 

Solve for x:

 

x > 33.333333 (3 repeating), but you can't have 0.3333333 message (need an integer), so the answer is really

 

x > 34 messages