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Answer:
Amount of green color used =
Step-by-step explanation:
We are given the following in the question:
Every 4 gallons of green paint is mixed with 3 gallons of blue paint. to make a particular shade.
Ratio of green color to blue paint can be calculated as:
Amount of shade = 16
Amount of green paint =
Amount of blue paint =
Thus, we can write:
Amount of green color used =
Amount of blue paint used =
The sum of n terms is given from the first term and the common ratio by
For your given values of a1=-11, r=-4, n=8, the sum of 8 terms is