Answer:
x = 8
Step-by-step explanation:
log(5x-4)-log(x+1)=log 4
log [ (5x - 4) / (x+ 1) ] = log 4
[ log (a/b) = loga - logb]
(5x - 4 ) / ( x + 1) = 4
(5x - 4) = 4x + 4
5x - 4x = 4 + 4
x = 8
Hope it will help :)❤
I can only see half of the question.
Answer:

Step-by-step explanation:
Given


Required
Find y when 
We have:

Express as equation

Solve for k

When 


When
, we have:



Answer:
The increase = $0.12
The new price = $1.27
Step-by-step explanation:
1.15 divided by 10% = 0.115 = 0.12
0.12 + 1.15= 1.27
20
2 x 20= 40 - 2= 38
i think that’s right?