What is larger a. 3.2x10^5 b.4.2x10^3 c. 1.1x10^5

A. is the largest number.

3.2 * 10^5 = 320,000

4.2 * 10^3 = 4,200

1.1 * 10^5 = 110,000

A quicker way to solve it is to look at the exponents and see which one is bigger (in this case, the exponent 5 in A and C is bigger than the 3 in B) and then look at the decimal to see which is bigger (in this case, 3.2 is larger than 1.1). But yea, that's just my way to solve it.

I hoped this helped! :)

The answer is a. 3.2x10^5  hope this helps!