We can simplfiy to be 
.
We know that 
is 10 and 
is i, so the answer is 10i, or D.
Answer: 12.75 inches
Step-by-step explanation:
Let x represent last year's rainfall.
Multiply by 0.8 since this year was 20% less.
x(0.8)= 10.2
x = 12.75
The largest change in temperature was between July and March/April
the equations
1/4=2x and 1/4/x=2have the same solution
because 1 / 4/ x = 2 can be simplified to
1 / 4 = 2x which is the same with the first equation
Solve for x = 1/8
Then substitute it to the both equation
¼ = 2 ( ¼)
¼ = ¼
2nd equation
1/ 4 /( 1/8) = 2
2 =2
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