exam Maths Puzzle Numerical Ability

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1) State the domain of the following:?
a) f(x)=cuberoot (x)-8

b) h(x)=3x^2+5x-3

c) m(x)=5x^2+9

d) l(x)=5x-4

e) g(x)=7x+4x+4

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exam Other Question

One grade of oil has 0.50% of an additive, and a higher grade has 0.75% of the additive. How many liters of each must be used to have 1000 L of a mixture with 0.65% of the additive. cube root of 16x to the 6th