Answer:
728000 mosquitoes
Step-by-step explanation:
In attachment
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The average rate of change obtained from the ratio of change in y to the change in x is 27
The average rate of change can be obtained using the relation :
Rate of change = (y2 - y1) ÷ (x2 - x1)
at; x1 = -3
y1 can be calculated from the function ;
y1= 3(-3³)-1
y1=-82
At ; x2 = 3
y2 can be calculated from the function ;
y2 = 3(3³)-1
y2=80
The rate of change can be calculated thus : (y2 - y1) ÷ (x2 - x1)
[80-(-82)]/[3-(-6])
162/6
27
Learn more about the average rate of change here:
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1 second = 2 megabytes
2 seconds = 4 megabytes
Step-by-step explanation:
Given,
Time taken to download 5 megabytes = 
seconds
Multiplying both sides by 
to find unit rate
1 second = 2 megabytes
2 seconds = 2*2 megabytes
2 seconds = 4 megabytes
Keywords: fraction, multiplication
Learn more about fractions at:
#LearnwithBrainly
12(x-3) + 18 = 4(2x-3)
12x-36+18 = 8x-12
12x -18 = 8x-12
12x-8x = -12 + 18
4x = 6
x = 6/4 or 3/2
one solution A
