A computer company produce this graph to show how many computers expects to sell based on how much the company spends on Internet advertising the company expects to sell 40 million computer Spani 5 million on Internet ad first Tising which set of units and scales are appropriate for to axes

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6.48/4 4 goes into 6.48 1.62 times

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what grade level is this? need to know so i can look in my old textbooks!

check above link.

graphically?   well, you graph them both, the solutions is where they both intersect each other, since there are two solutions, meaning they will meet twice, or namely the linear will run into the quadratic curve twice, and where they meet, those x,y coordinates are the solutions to the system.