Amusic player was marked down by 1/4 of the original price.
a. if the sales price is $128, what is the original price?
b. if the music player was marked up by 1/2 before it was placed on the sales floor, what was the price that the store paid for the player?
c. what is the difference between the discount price and the price that the store paid for the music player?

show all of your work! i need this asap! i will give you brainliest! if you send me nonsense or answers with no work, i will report happy new

Step-by-step explanation:

marked down by 1/4 of the original price.

let x represent original price

original price - 1/4 of original price = sales price

x - 1/4x = 128

4/4x - 1/4x = 128

3/4x = 128

x = 128/(3/4)

x = 128 * 4/3

x = 512/3

x = 170.666 rounds to 170.67 <== original price

I hope I am understanding this one correctly...

let x = price the store paid

x + 1/2x = 170.67

2/2x + 1/2x = 170.67

3/2x = 170.67

x = 170.67 / (3/2)

x = 170.67 * 2/3

x = 341.34/3

x = 113.78 <=== what the store paid

the difference between the discount price..I am assuming this is the $ 128 from part Aand what the store paid113.78...from part B..

128 - 113.78 = $ 14.22 <==

I am not completely sure about B and CB confused meand if B is wrong, so is C.

false

step-by-step explanation:

the reason i say this is because for a certain length of sides you can pick any two and the length is wither equal or greater than the third side and in this case it's not.

3 + 5 = 8

8 is smaller than 9 which is the third side.

hope this : )