Answer:
y
=
3
/2
x
+
5
Step-by-step explanation:
With the equation:
0.15 x = 30
x = 30 : 0.15 = $200
A regular price of TV is $200.
Which could not be used to determine x ( we shall plug in the value 200 ):
A ) 0.15 * 200 = 200 - 30
30 ≠ 170
B ) 0.85 * 200 = 200 - 30
170 = 170 ( correct )
C ) 200 - 0.15 * 200 = 200 - 30
200 - 30 = 200 - 30
170 = 170 ( correct )
D ) 0.15 * 200 = 30
30 = 30 ( correct )
Answer:
A ) 0.15 x = x - 30
You would use Pythagorean theorem to help u out if u have 2 sides u should be able to do it.
First show the statement holds for

. The left hand side is just 8, and the right hand side is

, so it's true.
Assume the statement holds for

, i.e.

and use this to show it holds for

, i.e.

By the assumption above, you have

so the statement is true for all

.