The tenth spot would be the number right after the decimal. The number in the hundredths spot is the one that determines what happens to the number in the tenths spot.
If the number in the hundredths is 5 or more, you would round the number in the tenths spot up one.
If the number in the hundredths spot is 4 or less, you would keep the same number in the tenths spot.
Since the number in the hundredths spot is 3, you would leave the number in the tenths place the same (2).
The answer is C. The numerator 7x+14 can be factored as 7(x+2). The denominator 2x^2+2x-6 can be factored as (x+2)(2x-3). The greatest common divisor of 7(x+2) and (x+2)(2x-3) is obviously x+2, which is contained in both of the two expressions.