J1

I need help on this question: You are given information on the intensity level (which is a measure of the sound intensity) at a point and its distance from the sound source. To make use of this information, you will need to determine the relation between...

Anna and Hannah have $80 each. Their friend offered to invest their money, promising to return a sum r times as great as what they invested. Anna was suspicious, so she invested $20 only, but Hannah invested her entire $80. Fortunately, the friend did ind...

That's what I thought.