1. Kristina, a former actress, spends all her income attending plays and movies. She likes plays exactly three times as much as she likes movies. She earns $120/month.
(a) If play tickets are $12 each and movie tickets are $4 each, how many plays will she see?
(b) If play tickets are $12 each and movie tickets are $5 each, how many plays will she see?
2. Charles budgets $9/week for his morning coffee with milk. He likes it only if it is prepared with 4 parts coffee, 1 part milk. Coffee costs $1/oz, milk costs $0.5/oz.
(a) How much coffee and how much milk will Charles buy per week?
(b) How will your answers change if the price of coffee rises to $3.25/oz, keeping everythingelse the same?