exam Maths Puzzle Numerical Ability

f. What is the profit made from selling 20 tile sets per month?


g. What is the profit made from selling 25 tile sets each month?



h. What is the profit made from selling no tile sets each month? Interpret your answer.

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exam Other Question
Use substitution to solve each system of equations. If the system does not have exactly one solution, state whether it has no solution or infinitely many solutions.

2x-y=-4
-3x+y=-9 Please help, i dont understand this!
Are the following lines parallel, perpendicular, or neither?
L1 with equation x - 6y = 24
L2 with equation 6x + y = 6