exam Maths Puzzle Numerical Ability

Paperback books are on sale for $3.95 each including tax. Explain how you could use the Distributive Property to mentally calculate the total cost of buying 7 paperback books.

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exam Other Question

Business and Finance. Kevin earned $165 interest for 1 year on an investment of $1500. At the same rate, what amount of interest would be earned by an investment of $2500? Please Help.
(x+12)(x-1)(x+6)>0

Solve. what is the solution set?