Yeah you did well on the table
The answer is C. Using ASA postulate, prove that triangles PQS and PRS are similar triangles
The expression would be (X-6)/7
Every kilogram is 1,000 grams, but you want 10 kilograms. You can multiply 1,000 10 times (you can also add 1,000 10 times,) giving you the answer > 10,000.
Hope this helped!
Nate