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Online ProgramA music store receives shipments of keyboards and guitars. A shipment of 10 keyboards and 5 guitars costs $600. A shipment of 2 keyboards and 8 guitars costs $470. Find the cost of a keyboard and the cost of a guitar. \(\left\{ \begin{array}{c} 5k+10g=600 \\ 2k+8g=470 \end{array} \right.\)
Shelly set up a system of equations to solve the problem. What is wrong with her setup? What are the correct equations?