What is the domain and range of this function?

Identify a1 and r for the geometric sequence an= -256(-1/4) n-1

5× 1/2 = ? a) more than 5 because you are multiplying by a whole number b) 5/10 because you multiply the numerator and denominator by 5 c) less than 5 because you are multiplying by a number that is more than 1 d) less than 5 because you are multiplying by a number that is less than 1

On a piece of paper graph f(x)=5•(0.4)^x