Azookeeper predicted the weight of a new baby elephant to be 270 pounds when it was born. the elephant actually weighed 302 pounds at birth. what was the percent error of the zookeeper's prediction?

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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.