Answer:
x =
, 
Step-by-step explanation:
First, isolate the absolute value:
5|2x - 7| = 20
divide both sides by 5:
|2x - 7| = 4
break into 2 equations:
2x - 7 = 4, 2x - 7 = -4
solve both equations and collect solutions:
2x = 11, 2x = 3
x =
, 
The second answer is D) it will increase 8 times
Answer:
k = 30
Step-by-step explanation:
Given
=
( cross- multiply )
3k = 90 ( divide both sides by 3 )
k = 30
Answer:
Final selling price: 575 dollars.
Step-by-step explanation:
Since we know that 40%=230 that means 20%=115.
With this information, I can multiply 115 by 5 to get the answer which is 575.
Hope this helped!