Answer: game 1 10 mins game 2 22
Step-by-step explanation:
What is being asked here? Are they asking for the passing grade or the total with all the other 90 points added? I think it is A, 90%
Answer

Step by step explanation

Add the numbers
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Move constant to right hand side and change it's sign
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Calculate the difference
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ANSWER

EXPLANATION
The equation of the curve is:


We differentiate to obtain:


The length of the arc

This implies that:



We know that sum of two sides in any triangle must be greater than the measure of third (longest) side otherwise triangle will not be formed.
According to picture longest side is 18
So this triangle must follow inequality
9+x>18
or 9-9+x>18-9
or x>9
that means value of x must be more than 9.
choices a, c, d are greater than 9 except choice b
Hence choice B-9 is the final answer.