exam Maths Puzzle Numerical Ability

What are the coordinates of the focal point of y=3(5)^x-1 +-2? ( this + -2 is not part of the exponent).

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exam Other Question

what is (are) the solution(s) of the equation log sub 4 4x+2 log sub4(x+3)=2 2-|7x-4|=5