exam Maths Puzzle Numerical Ability

Write the equation of the line that passes through point (6, 4) with a slope of 2.

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exam Other Question

Graph the system of constraints. Then find the values of x and y that maximize A=20x+30y and list the maximum value.

x greater then or equal to 0
y greater then or equal to 0
-2x+4y less then or equal to 4
x less then or equal to 4
how many pounds of water must be evaporated from 50lbs of a 3% salt solution so that the remaining solution will be a 5% salt?