exam Maths Puzzle Numerical Ability

3x-4y_<12
2x-y_<10

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exam Other Question

Find the values for m and b in the following system so that the solution to the system is (-3,4)

5x+7y=b
mx+y=22



The value for m =>



The value for b =>
This is the problem: Use unit multipliers to convert 16,000 inches to miles. I am stumped!