Answer:
option=d.
hkm=jkl( by vertical opposite angle)
155°=(5x+15)°
155-15=5x
140=5x
140/5=x
28=x
Look for an addition/subtraction or multiplication/division patterns between numbers in the sequence.
1, 4, 9, 16, ...
if you look at what you add to get to the next number.
+3, +5, +7, ...
the pattern is adding consecutive odd numbers
16+9 = 25
25+11 = 36
36+13 = 49
1, 4, 9, 16, 25, 36, 49, ...
<u>Given </u>that the functions
and 
We need to determine the value of the function 
First, we shall determine the composition of the function 
<u>Function </u>
<u>:</u>
Let us determine the function 
Thus, we have;
![(g \circ f)(x)=g[f(x)]](https://tex.z-dn.net/?f=%28g%20%5Ccirc%20f%29%28x%29%3Dg%5Bf%28x%29%5D)
![=g[x+4]](https://tex.z-dn.net/?f=%3Dg%5Bx%2B4%5D)



Thus, the function is 
<u>Value of the function </u>
<u>:</u>
The value of the function can be determined by substituting x = -3 in the function 
Thus, we have;

Simplifying the terms, we get;



Thus, the value of the function
is 1.
The answer is 570$
10% of 800 is 80 + 150$ is 230
800-230=570