Answer:
Step-by-step explanation:
Given
Time is extended from 28 days to 76 days
The percentage increase is given by
Putting values
Thus, the percentage increase in time is
Sketch the graph of y=7^x
Reflect the graph across the y-axis to show the function y=7^-x
Stretch the graph vertically by a factor of 3 to show the function y= 3*7^-x
Shift the graph up 2 units to show the function y=3*7^-x+2
Answer: 3 3/8
Hope this helps!
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