A store marks up a $45 item by 40%. What is the selling price?

40% of $45 is $18, and $45 + $18 = $63.

Which of the following is an irrational number?

√7 cannot be expressed as a fraction and its decimal never repeats, making it irrational.

Divide 24 by 3/5 (multiply by 5/3): 24 × 5/3 = 40.

10³ = 1,000, and 2.5 × 1,000 = 2,500.

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What is the least common multiple (LCM) of 8 and 12?