1 + 0.09 = 1.09
90 * 1.09 = 98.1
The original price of the in-line skates was $98.1
So, by multiplying the exponents, you would add all of the square roots together. For example for your question you would add 1+1+4+5=11 so the answer is c to the power of 11
2/3 +4/3=6/3=2.... Self explanatory
I found the corresponding image of the above problem. I also put my answer on the image.
Pls. see attachment.