exam Maths Puzzle Numerical Ability

{[7(x-2) + 4] - [2(x-5)+6}]

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exam Other Question

An employee who produces x units per hour earns an hourly wage of y = 0.55x + 7 (in dollars). Find the hourly wage for an employee who produces 13 units per hour.

Thank you A car travels 100 mph for the first half of a 400 mile race. How fast must the car go to average 200 mph?