Answer:
I want to be the brainlyiest
Answer:
A
Step-by-step explanation:
Answer:
78
Step-by-step explanation:
(5 + 8) * 6 = k
Answer:
a) 
, b) 
, c) 
Step-by-step explanation:
a) We evaluate the function at 
:
b) First, we determine the inverse of the function by algebraic means:
1) 
Given
2) ![y +(-1) = 2\cdot x + [1+(-1)]](https://tex.z-dn.net/?f=y%20%2B%28-1%29%20%3D%202%5Ccdot%20x%20%2B%20%5B1%2B%28-1%29%5D)
Compatibility with addition/Associative property
3) 
Existence of additive inverse/Modulative property
4) ![2^{-1}\cdot [y+(-1)] = (2\cdot 2^{-1})\cdot x](https://tex.z-dn.net/?f=2%5E%7B-1%7D%5Ccdot%20%5By%2B%28-1%29%5D%20%3D%20%282%5Ccdot%202%5E%7B-1%7D%29%5Ccdot%20x)
Compatibility with multiplication/Commutative and associative properties
5) ![[y+(-1)]\cdot 2^{-1} = x](https://tex.z-dn.net/?f=%5By%2B%28-1%29%5D%5Ccdot%202%5E%7B-1%7D%20%3D%20x)
Existence of multiplicative inverse/Modulative and commutative properties
6) ![x = [y+(-1)]\cdot 2^{-1}](https://tex.z-dn.net/?f=x%20%3D%20%5By%2B%28-1%29%5D%5Ccdot%202%5E%7B-1%7D)
Symmetry property of equality
7) 
Definitions of subtraction and division
8) 
/
/Result
c) Now we evaluate the expression obtained on b) at the given number:
Answer:
r = 7
Step-by-step explanation:
In a direct proportionality,
y = rx
Substitute a pair of values for x and y
77 = r × 11
Divide each side by 11
r = 77/11 = 7
