In a pie chart the central angle in degrees at the center of the circle is a) 180 b) 360 c) 270 d) 90
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line N has slope m =
given a line with slope m then the slope of a line perpendicular to it is
= -
thus line N has slope - =
The general formula for exponential growth and decays is:
if k>0 then then it is an exponential growth function. If k<0 then the function represents an exponential decay.
Now we need to classify each of the functions:
1.
The function
can be wrtten as:
comparing with the general formula we notice that k=2, therefore this is an exponential growth.
2.
The function
can be written as:
comparing with the general formula we notice that k=-4, therefore this is an exponential decay.
3.
The function
comparing with the general formula we notice that k=-1, therefore this is an exponential decay.