exam Maths Puzzle Numerical Ability

State the domain of the following:
g(x)= 7x+4/x+4

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exam Other Question

Torry took 6 tests, she had an average 97. First 5 tests had the same score. The last test had 12 points less. What was her last test score? I am stuck on correct answer for:

w^2 + 6w +5 over w + 5 =

I am not using a specific book. I am just practicing...