exam Maths Puzzle Numerical Ability

f(x)=7x+2 find f(x) when x=0 and when x=1

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exam Other Question

the square root of 2x plus three minus the square root ofx plus one equals one A 25 inch rope is cut into 3 peices such that the middle sized peice is 1 inch longer than the shor piece and the longest is twice as long as the short peice. How long is each peice?