<|system|>
Shari walks at a constant rate of 3 miles per hour. After 1.5 hours, how many miles did she walk? Express your answer as a decimal to the nearest tenth.</s>.
<|user|>
Can you answer based on context?
<|assistant|>
Multiply 3 miles per hour by 1.5 hours to find that Shari walks $4.5$ miles.