exam Maths Puzzle Numerical Ability

if -6(2x+1)=-4x+10, then x =

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exam Other Question

Given f(x) = x^2 -f if x <-1
3x+2 if x >- -1 , find f(-1) Given the function h described by h(x)=7x, find each of the following.
a) h(19)
b) h(6)
c) h(21)
Please help!!