exam Maths Puzzle Numerical Ability

Please HELP HELP!!! Please help explain and show what is the decibel level of a normal conversation,(square root of 10)- 3.2 x watt per meter^2?

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Grandpa started to give nickels to his grandchildren any time he sa them. So far, Sharon has 3 times as many as Jennifer, Sharon has twice as many as Brian, and Michelle has only can someone please help me im stuck


8. (6 pts) Construct a truth table for (qp)  q