exam Maths Puzzle Numerical Ability

the ordered pair (1, -2) is a solution of the following system..true or false?
x+y=-3
x-y=1

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exam Other Question

During the sixth month of the fiscal year, the program director of the Westchester
Home-Delivered Meals (WHDM) program decides to again recompute fixed costs,
variable costs, and Given the above graph, identify the graph of the function (line, parabola, hyperbola, or exponential), explain your choice, and give the domain and range as shown in the graph, and