exam Maths Puzzle Numerical Ability

2^(x-1)=64

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exam Other Question

What is the y-intercept of -1/6(y+3)=(1/2)^x-3? Solve the system of equations.
1.25x � 2y = 1.3125
x + 2y = �0.75

A) {(1.75, 1.5)}
B) {(0.75, 0)}
C) {(0.25, �0.5)}
D) {(1.75, �0.5)}