Reanna Bhagwandass 11/4/2020 DIRECT VARIATION 201
1.
Misha bought an energy-efficient washing machine. The amount of water she saves per wash load
compared to her old washing machine is shown in the table below.
1
2
5
6
Number of Loads
Water (gal)
12
24
60
72
a.
Is this relationship a direct variation? How do you know?
b.
Write the equation that describes the relationship.
c.
Determine how much water she will save when washing 8 loads.

Marco is studying a type of mold that grows at a fast rate. he created the function f(x) = 345(1.30)x to model the number of mold spores per week. what does the 1.30 represent? how many mold spores are there after 4 weeks? round your answer to the nearest whole number. 1.30 represents the number of mold spores marco had at the beginning of the study; 985 mold spores 1.30 represents the number of mold spores grown in a given week; 448 mold spores 1.30 represents the 30% rate of weekly growth; 345 mold spores 1.30 represents the 30% rate of weekly growth; 985 mold spores

40 describe the outliers from the scatter plot.

The surface area of the triangular prism is .