Elley is mixing blue and yellow food coloring to make green food coloring for her bakery. the relationship between the amounts of food coloring she mixes can be modeled by the equation b=2/3y, where b represents the amount of blue food coloring and y represents the amount of yellow food coloring. which of the following statements is true?
a.
kelley uses 2 parts blue for every 3 parts yellow.
b.
kelley uses 3 parts blue for every 2 parts yellow.
c.
kelley uses 2 parts blue for every 5 parts yellow.
d.
kelley uses 5 parts blue for every 2 parts yellow.

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Titus works at a hotel. part of his job is to keep the complimentary pitcher of water at least half full and always with ice. when he starts his shift, the water level shows 4 gallons, or 128 cups of water. as the shift progresses, he records the level of the water every 10 minutes. after 2 hours, he uses a regression calculator to compute an equation for the decrease in water. his equation is w –0.414t + 129.549, where t is the number of minutes and w is the level of water. according to the equation, after about how many minutes would the water level be less than or equal to 64 cups?