Simplify -18b^-4 Pliz help, I don’t understand math, especially Algebra II

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.

Find the value. a. 0.003 b. 0.03 c. 0.3 d. 3

What are different types of statistical programs