The answer is

.
Before we rationalize the denominator, we must simplify the numerator and denominator. We evaluate the square root on the top, and combine like terms on the bottom:

To rationalize the denominator, we multiply by the conjugate. The conjugate is found by making the imaginary term of the complex number, the i part, the opposite sign. The conjugate of -2-i is -2+i:
P=2(L+W) and P=34 so
2(L+W)=34
L+W=17 so we can say
L=17-W
A=LW using L from above
A=(17-W)W
A=17W-W^2 and A=30 so
30=17W-W^2
W^2-17W+30=0
W^2-2W-15W+30=0
W(W-2)-15(W-2)=0
(W-15)(W-2)=0
So the dimensions of the rectangle are 15 meters by 2 meters.
C is the right answer, the product is 13.348
Remember this rhyme:
Hey Diddle Diddle, the medians the middle:
(Answer for your question: Median is 80%)
You add and divide for the Mean:
( Answer for your question: Mean is 93)
The mode is the one that appears the most:
( Answer for your question: Mode is 87%)
And the range is the difference between.:
( Answer for your question: Range is 54.)
I hope this helps! :)