exam Maths Puzzle Numerical Ability

find the axis of symentry of the parabola defined by the given quadratic function.

f(x)= x^2+5

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exam Other Question

john traveled 40 mph to his friends house
on the return trip back home he traveled 45 mph
It took him 4hrs round trip
Question: What was the total distance traveled?

Thank you multiply

(3/4 X^3- !/3)(1/5 X^2 + 3/7)

I have never done one like this.Would someone please help me?