The Quantities have numbers with great exponents and none of the exponent rules can be applied, so look for a way to factor. In Quantity A, factor 987 into its prime factors. The prime factors of 98 are 2 × 7 × 7, so 987 can be rewritten as (2×72)7. Use thePower-Multiply rule to combine the exponents and simplify to 27×714. Quantity A can be rewritten as
27×714
763
. Use the Divide- Subtract rule to combine the exponents with base 7 to find that
27×714
763
. Therefore, the quantities are equal. The correct answer is (C).