exam Maths Puzzle Numerical Ability

Solve the system of linear equations by graphing.
x-y<=3
x+2y>=6

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exam Other Question

Transforming equations, the problem is 1/2x=3 5/6
My answer for this was 6(23/4)
Please and Thank You=) Marginal Cost of Coffee The manager of a restaurant
found that the cost to produce 100 cups of coffee is
$11.02, while the cost to produce 400 cups is $40.12.
Assume the cost C(