8 * 10-3 is how many times as great as 4 x 10-6? A- 2x10-3
B- 2x10-9
C- 2x103
D- 2x109

Ithink it should be 55.

The question is kind of confusing. if it's asking how many variations of answers can you give. then do 4^5 for your answer.this would be something like the first question could be a and the 2nd c or first b next c etc. if you can, ask the teacher for a better confirmation of what it's asking. if i'm assuming correctly what it's asking, it's 625 different variations.