exam Maths Puzzle Numerical Ability

I need help. I am lost on this algebra.

The area of a rectangle is 119 m2. The base is four less than three times the height. What is the length of the base?

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exam Other Question

How many positive real solutions are there in:
f(x)=-2x^4+3x^3+7x^2+2

a)0

b)2

c)1

d)None, there is no x-term a man at A walks to a neigborhoring town, B, at the rate of 5mph and returns at a alower rate of 4mph. if it took him 3 hours and 9 minutes for the entire trip, how far is town from A.