Answer:
In almost every culture yellow represents sunshine, happiness, and warmth. Yellow is the color most often associated with the deity in many religions (Hinduism and Ancient Egypt) Yellow is the color of traffic lights and signs indicating caution all over the world. Unique Meanings of Yellow in Different Cultures
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The kind of ROI Luis demonstrates is : Positive ROI
<h3>Positive ROI</h3>
A positive ROI is defined as when the cost of a financial decision/step is lower than the gain of a financial decision.
Luis takes a loan to help him earn a certificate, the certificate he earns has helped him earn a good salary job which he can use to repay the loan.
Therefore in the long term Luis will have a positive return on investment on his financial decision.
Hence we can conclude that the kind of ROI Luis demonstrates is Positive ROI.
Learn more about ROI here : brainly.com/question/23603222
well first he would have to work intervals at a time for example 15 min study intervals then snack break but only brain foods to help his memory then repeat the proceed until desired time
plz mark brainliest
