exam Maths Puzzle Numerical Ability

I tried using logarithms, but I was a bit confused??? Help?

4^x = (5^x + 2)^.5

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exam Other Question

Solve the inequality and graph the solution

x - 5 < 3 Write an equation in slope-intercept form of the line that is perpendicular to the graph of y=3x+17 and passes through (-7,4)