exam Maths Puzzle Numerical Ability

y=2^x++1?
y=x+6=?
y=log2(x-1)andy=x^3-4x find the graphs?
solve log2(x-1)=x^3-4x.
what does non linear mean?
what other methods do we have to solve these systems?

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exam Other Question

C-9 On a right triangle I am having problems figuring out the degrees and inches. First triangle is one side 2 1/8" the other side is 2 5/8 " to find the missing quantity X. I squa Are the following lines parallel, perpendicular, or neither?
L1 with equation x - 2y = 10
L2 with equation 2x + y = 2