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Maths Puzzle
Numerical Ability
Multiply.
2y3 5y6
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I have two questions from text book Beginning Algebra. Thank You in advance.
1. Given f(x)=5^2-3x+1, find f(-2)
2. Given f(x)=-5x-1, find f(a-1)
Equal amounts are invested at 6%, 7%, and 8% annual interest. If the three investments yield a total of $2,037 annual interest, find the total investment.