exam Maths Puzzle Numerical Ability

(graphing linear equations)
Graph each wquation by using the x-and y-intercepts.

3x-y=3

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earned $12,000 last year. He invested part at 3% simple interest and the rest at 4%. in one year, he earned a total of 440.00 in interest. How much did he invest at A worker charges $30 for a 2 hour job. He charges $94 for a 4 hour job. How much would he charge for an 8 hour job?