Explain how you can tell the difference between exponential growth and exponential decay by looking at a function rule

See explanation below

Step-by-step explanation:

Exponential growth (decay) is a way of describing the growth (decay) of a certain variable x (money, population, mass, etc..) with respect to time.

It happens when the speed of growth (decay) is proportional to the quantity itself at  any given instant t.

If x(t) is the amount of the variable x at a certain instant t, the exponential growth (decay) can be modeled with the equation

where C is the initial amount of x (when t=0) and its always considered positive, and b, r are constants that depends on the speed of growth (decay).

To find out if x(t) represents an exponential growth, check b and r.

If b > 1 AND r > 0 then x(t) represents an exponential growth. For example,

both represent exponential growth.

If r < 0 AND b >1  OR r > 0 AND 0 < b < 1 then it is an exponential decay. For example,

both represent exponential decay.

step-by-step explanation:

subtract 7, so the answer is x < = 3, or c.

c.

step-by-step explanation:

because first you have to add the 4x, 9x, and the 7x together and you get 20x and then you add the last numbers up and you get 5and then you put the subtraction sign in there and that's how you get the answer.