exam Maths Puzzle Numerical Ability

how can you solve equations with "i"

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exam Other Question

A total of $10,000 is invested in two funds paying 5% and 7% annual interest. The combined interest is $630. How much of the $10,000 is invested in each fund? True or false?

The direction of the inequality symbol must be reversed when both sides of an inequality are multiplied or divided by a positive number.