exam Maths Puzzle Numerical Ability

How do you simplify the following fraction?

3a + b
______
6a + 2b

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exam Other Question

So there are my 2 problems
1) f(x)=sqrt(-x)
2)f(x)=ln(-x)
i tried doing them in the calculator (ti83+) but no luck If Hannah purchased a 5-day parking pass for $36.25, how much did she pay per day.

A.$6.75 B. $6.85 C. $7.00 D. $7.25

Would the answer be D? Because 7.25 multiplied by 5 equal 36.25.

Is this correct?