If something is 10% more than something is it 110%

Prove that the sum of two consecutive exponents of the number 5 is divisible by 30.if two consecutive exponents are 5n and 5n + 1, then their sum can be written as 30.

Which expressions are equivalent to k/2 choose 2 answers: a k-2 b 2/k c 1/2k d k/2 e k+k

Credit card a offers an introductory apr of 3.4% for the first three months and standard apr of 15.7% thereafter,