Answer:
21 maybe?
Step-by-step explanation:
if those numbers represent lengths and those lines are the same size, x is 21
25 is equal to 1/4
to find 1/4 of a number, you divide the number by 4.
the equation here is:
x ÷ 4 = 40
to solve, do 40 x 4 = 160
x = 160
40 is 25% of 160
The result of
is 
<h3>Composite functions</h3>
Composite functions are functions that are gotten by combining multiple functions
<h3>The functions</h3>
The functions are given as:


To calculate f(x) * g(x), we have:
![f(x) \times g(x) = [x^2 + 8x + 15] \times [x + 5]](https://tex.z-dn.net/?f=f%28x%29%20%5Ctimes%20g%28x%29%20%3D%20%5Bx%5E2%20%2B%208x%20%2B%2015%5D%20%5Ctimes%20%5Bx%20%2B%205%5D)
Expand the above expression

Collect like terms

Evaluate the like terms

Hence, the result of
is 
Read more about composite functions at:
brainly.com/question/10687170
478(900) + 478(95)
Hope this helps!
Answer:
9.833333
Step-by-step explanation: