exam Maths Puzzle Numerical Ability

Simplify: (4m/5n^2)-(n/2m).

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exam Other Question

graph the equation 4x+y>_4 (4x+y is greater than or equal to 4) The price of a 2-hour plumbing repair job is $140 and the price of a 5-hour job is $290. Use the slope to predict the cost of a repair job lasting 4 hours.