Question 1:
Match the order of the letters.
M matches with P, but N does not match with R
Thus, MN≠PR.
So, choice 1 is your answer.
Question 2:
Matching the letters, we know RT = NQ
7x-5 = 5x+11
Add both sides by 5
7x = 5x + 16
Subtract both sides by 5x
2x = 16
Divide both sides by 2
x = 8
Wait! We're looking for the length, not the value of x.
Plug in x = 8 into any of the two equations.
You get 51.
Your answer is the second choice.
Have an awesome day! :)