Answer:
123
Step-by-step explanation:
The given function is :

We need to find the value of f(9). It can be done by putting x = 9 in the above function as follows :

So, the value of f(9) is 123.
<u>Question</u>:
A rectangle has a height of 4 and a width of x² + 3x + 2. Express the area of the entire rectangle.
<u>Given:</u>
The height of the rectangle is 4.
The width of the rectangle is 
We need to determine the area of the entire rectangle.
<u>Area of the entire rectangle:</u>
Let us determine the area of the entire rectangle.
The area of the rectangle can be determined using the formula,

Substituting height = 4 and width = 
Thus, we get;

Multiplying the terms by 4, we get;

Thus, the area of the entire rectangle is 
Answer:
9.425
Step-by-step explanation:
first find the total length of a circle with the radius being 2cm
which u will obtain 12.566
not forget that in circle 90 degrees =1/4
so u will find 1/4 of 12.566 which= 3.141
then subtract 3.141 from 12.566
=9.425
3 x 5 + 9(9) /3
15 + 9(9) / 3
15 + 81/3
15 +27
42
You can solve this by using PEMDAS.