Given:
The given function is

To find whether the function is growth or decay and the growth of decay.
Formula:
The function
is said to be an exponential growth, if the value of a > 0 and r > 0
Again, the function
is said to be an exponential decay, if the value of a > 0 and 0 < r < 1.
Now,


Thus, the value of a > 0 and r > 0, then the given function is an exponential growth function.
Therefore,
The given function is an exponential growth function.
To clarify the systems of equations:


We already have opposite coefficients for y, so combine the two equations together:

Divide both sides by 5 to get x by itself:

Because we now know x, we can plug it into one of the equations.
We will plug this value into the first equation:


Add 24 to both sides.

Divide both sides by -1 to get y by itself.

Using elimination,
x = 2 and y = -30.
If the sum of the square of a number plus the triple of the same number equals eighteen, the required numbers are 3 and -6
Let the unknown number be x
The square of the number is expressed as x²
Triple of the unknown number will also be expressed as 3x
Taking the sum of both numbers and equating it to 18 will give;

Factorize the resulting equation:

Hence the required numbers are 3 and -6
Learn more here; brainly.com/question/13805464
All you need to do is divide 2.25 by 2!
The answer is 1.125!
I hope this helps! :)