20 points!
express the number in scientific notation.
487,000,000,000
a)
4.87 × 10^11
b)
4.87 × 10^-11
c)
48.7 × 10^10
d)
48.7 × 10^-10
i think the answer is c..

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.