exam Maths Puzzle Numerical Ability

Please!!

F= -log 1
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3.8*2

I appreciate your help, Thanks!!

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exam Other Question

i can factor most of them down i just cant get this one.
54b+2a^3b The formula A = 182e^0.025t models the population of a particular city, in thousands, t years after 1998. When will the population of the city reach 211 thousand?
2004
2007
2005
2006