For question 39 & 40, we need to use the below equation to complete the sentence

Question 39:
When ' n ' increase, the
will also increase and that multiplied with constant ' m ', the l will also increase.
Solution for question 39:
As
increases and
stays constant ,
<u>increases</u>
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Question 40:
Solving the equation for m, we get

When ' l ' increases, the numerator increase, the denominator stays constant because 'n' stays constant, for this condition, the fraction increases.
Solution for question 40:
As
increase and
stays constant,
<em><u>increases</u></em>
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For question 41 & 42, we need to use the below equation to complete the sentence

Question 41:
When
is triped, the equation will be...

Solution for question 41:
If
is tripled and
stays constant,
is multiplied by <em><u>9</u></em>
--------
Question 42:
When t is doubled, the equation will be...

Solution for 42:
If
doubled and
stays constant,
is multiplied by <em><u>1/4 or 0.25</u></em>