Book Maths Puzzle General Mental Ability

To produce 80 copies of a magazine costs 52 cents per copy.

To produce 760 copies of the magazine costs 35 cents per copy.

a) Name two ordered pairs.

b) Write the linear equation.

c) Predict the cost per copy for 480 copies.

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Book Other Question

Solve by the addition method:

11x +2y = -1
2x +3y = 13
The sum of the squares of two consecutive integers is 41. Find the integers