PLEASE HELP I NEED THIS ASAP

Given:

The exponential function is

To find:

The percentage rate of increase or decrease.

Solution:

The general form of an exponential function is

        ...(i)

Where, a is the initial value, r<0 is the rate of decrease, r>0 rate of increase, x is time period.

We have,

It can be written as

          ...(ii)

On comparing (i) and (ii), we get

r>0, so the it is the rate of increase. Multiply it by 100 to get the percentage rate of increase.

Therefore, the percentage rate of increase is 7.4%.

step-by-step explanation:

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341

step-by-step explanation:

all you have to do is 9x31 (which equals 279) and then 20x31 (which equals 620). then you have to subtract. 620-279=341.