exam Maths Puzzle Numerical Ability

Suppose a city's population, in thousands, t years after 1980 is represented by an exponential function P(t. We know that in 1983 the city had a population of P2=310 thousand and i

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is: 5x to the second + 35x + 60 = Bob's Bank holds a simple discount note in the amount of $8,000. The discount rate was 9% and the term of the note was 150 days. The bank rediscounted the note after 90 days at 7%.