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
Step-by-step explanation: so first you remove the ( ) because they’re useless in this then once you remove then Since two opposites add up to zero, remove them from the expression then you only get left with 9.