Suppose you have a weighted coin in which heads comes up with probability $\frac34$ and tails with probability $\frac14$.  If you flip heads, you win 2 dollars, but if you flip tails, you lose 1 dollar.  What is the expected value of a coin flip? Express your answer as a decimal.
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You are a helpful assistant.<|im_end|>
<|im_start|>user
Suppose you have a weighted coin in which heads comes up with probability $\frac34$ and tails with probability $\frac14$.  If you flip heads, you win 2 dollars, but if you flip tails, you lose 1 dollar.  What is the expected value of a coin flip? Express your answer as a decimal.
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
\$1.25
Suppose you have a weighted coin in which heads comes up with probability $\frac34$ and tails with probability $\frac14$.  If you flip heads, you win 2 dollars, but if you flip tails, you lose 1 dollar.  What is the expected value of a coin flip? Express your answer as a decimal.
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