exam Maths Puzzle Numerical Ability

if f(x)=9-x^2 and g(x) =2x-2, find (f-g)(-2).

a.11
b.-1
c.7
d.20

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exam Other Question

The area of an Equilateral Triangle with sides of length "S" can be found by the function F(S)=1/4(3)1/1S2. Find the area of an equilateral triangle with sides of length 4.5. Round your answer to the nearest tenth. </a>