exam Maths Puzzle Numerical Ability

Simplify the expression.Write your answer in scientific notation.

(1.4 x 10^3)^3

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Any help with this question would be much obliged:)

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exam Other Question

Louie borrowed $525.00 to buy some stereo speakers. The store charges 7.03% simple interst. How much interest will Louie owe if he borrows the money for 2 years?

Answer Choices:

A)$36.91
B)$73.82
C)$74.68
D)$369.08 A number, half of that number, and one-third of that number are added. The result is 22. What is the original number?