Question

Question Below:

http://gyazo.com/0607af4f2fbcfa218fd06a2c82b75b39

Answer 1

Remember that \(x^a\times x^b = x^{a+b}\)
That will help you get the exponents.

Answer 2

\(\bf (3.6\times 10^{15})\times (8\times 10^{21})\implies 3.6\times 8\times 10^{15}\times 10^{21}\\ \quad \\\implies 3.6\times 8\times 10^{15+21}\)

Answer 3

So B?

Answer 4

@MattGibson
That (2.88* 10^37 is what I got from the steps above.
>>>So B?