exam Maths Puzzle Numerical Ability

Mr. West drove his car from home to Chicago at the rate of 40 mph. and returned at a rate of 45 mph. If his time going exceeded his time returning by 30 minuets, find his time goin

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exam Other Question

Find the domain of the given function.
h(x)= 1/x+1

____ (Use interval notation.) Factor the following polynomials:

4y^2+16y+16

I came up with this:(2y^2)+2y*8+4^2=(y+4)(y+4)

Also this polynomial:

x^2-25/x+5

It reads x squared -25 over x+5

This