exam Maths Puzzle Numerical Ability

Suppose that the function P=11+441nx represents the percentage of inbound e-mail in the U.S. that is considered spam, where x is the number of years after 2002.

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exam Other Question

Jules works part time at the bulk barn. She mixed one nut type selling at $2.20/kg with another selling at $2.40/kg. If 100kg were mixed and sold for $2.28/kg, how much of each type of nut mixture was used? Given that log lower case (x)=3.58 and log lower case a (y)=4.79, find log lower a(y/x).