exam Maths Puzzle Numerical Ability

Could you please help me solve the following equation by using the square root method? 9x^2-30x+25=-1

Thank you very much for any help you can provide.

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exam Other Question

For a sample of size n=60, proportion p=0.35, and 95% confidence level, the lower bound of the proportion is ______? An employee who produces x units per hour earns an hourly wage of y = 0.55x + 8 (in dollars). Find the hourly wage for an employee who produces 9 units per hour.

Thank you.