What is ariethmaticalgebra and defination of average

If you meant *Arithmetic,

Arithmetic: Basically involves adding, subtracting , multiplying , and dividing.

Algebra: Algebra is part of  mathematic level, in which it has to do with finding variables, (usually uses symbols in place of values - like finding the x) functions, and also has to do with graphing. 

Average: Average is a number that basically means set of numbers relating to function. Like relating to arithmetic.

Hope this helps!!

a - base

b - exponent

so,

the base is 8the exponent is 3the exponent tells you to multiply 8 together three timesthe expanded form is 8*8*8