A manager bought lunch for his coworkers. Each person picked either a salad or a burger. The salads cost $5 each and the burgers
cost $8 each. If the manager spent $102 and bought lunch for 18 people, how many of each item did he buy?
1 answer:
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For problems like this you can move the y's on the bottem up top by fliping the sign of the exponent (in this case 7 to -7) and MULTIPLYING it with EVERYTHING on top, then because of properties of multplication you can add the exponents to combine them into one term (in this case add 3 and -7 to get -4)
If any of this does not make sense let me know and ill try to clarify better