exam Maths Puzzle Numerical Ability

2a-3b=-11
a+3b=8

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exam Other Question

Solve: log(2x+34)-log(x+1)=1 Which function has a domain {xsuch thatx is less than 2, x is R}?
a) -1/4(y-2)=(x+5)^2
b) y=3(4)(^-(x-2)) +2
c) y=log(4-2x)
d) y=log base1/2 (x-2)
I think the answer is (B)?????????