Which of the following describes exponential decay?

The amount at a given time can be calculated by subtracting an amount from the previous amount.

The amount at a given time can be calculated by adding an amount to the previous amount.

The amount at a given time can be calculated by multiplying the previous amount by a value greater than 1.

The amount at a given time can be calculated by multiplying the previous amount by a value less than 1.

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step-by-step explanation:

same question do you know the answer

d

step-by-step explanation:

the two points from this line are   (0,4)   & (2,-2)

we can call

now, lets find the slope (m):

now finding b (the y intercept). this is the point at the y-axis where the line cuts the axis. looking at the graph, it is y = 4. so the point is 4. hence b = 4

the slope-intercept form is given by  

putting the points, we have:

d is the correct answer.