book Maths Puzzle Numerical Ability

Given f (x) = 4x + 4, find f (x + 2)
A) 3x + 2 B) 4x + 6 C) x + 6 D) 4x + 12

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book Other Question

Will someone please help me with this:
Simplify:
(4x^5/2x^2)-4 this is what I tried:
=2x^3 neg 4th power At the site of the old millstone, a triangle. Two sides: 15 and 10 yards; 30 degree angle opposite the 10-yard side: corner located at the center of the millstone. Third side: due