Highlands
The dot plots show rainfall totals for several spring
storms in highland areas and lowland areas.
OOO

What is the mean rainfall for the highland storms?
2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32
Rainfall (mm)
Lowlands
What is the mean rainfall for the lowland storms?
..8
2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32
Rainfall (mm)

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

What is the explicit formula for this sequence? -7, -4, -1, 2, a.) an = 8 + (b - 1)3 b.) an = -7 + (n - 1)3 c.) an = 3 + (n -1) (-7) d.) an = -7 + (n - )

Use the elimination method to solve the systems of equations. choose the correct ordered pair. 7x+4y=39