[tex]-7.85=\dfrac{x}{-3.14}\qquad\text{Given}\\\\(-7.85)\cdot (-3.14)=x\qquad\text{multiply by -3.14}\\\\24.649=x\qquad\text{simplify}[/tex]
The appropriate choice is ...
... D) 24.649
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A product involving an even number of minus signs is positive.