exam Maths Puzzle Numerical Ability

The problem is--- Solve the inequality and graph the solution set

5x-1<4 and x-2>-1

I got x<1 and x>1 which I believe are right. However, I am unsure how to graph this. The

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What is the yearly depreciation, based on the straight-line method, of a piece of machinery that cost $35,000 with a salvage value of $5,000 and a depreciable life of 15 years? PLEASE HELP.......

The line y=0.15x + 0.70 represents an estimate of the average cost of gasoline for each year. The line 0.11x - y = -0.85 estimates the price of gasoline in Ja