A computer company's stock costs $122 at the start of the day. At the end of the day it costs $93. By what amount did the stock's value change over the day?

the amount the stock changed over the day = $29

Step-by-step explanation:

The stock cost $122 at the start of the day. At the end of the day it cost $93. The amount the stock value changed can be calculated below.

The initial amount of the stock that days was $122 but at the end of the day it changes to $93. This means the stock cost decreases over the day.

Initial cost of stock at the day = $122

Final cost at the end of the day = $93

the amount the stock changes over the day = initial cost of stock at the day - final cost at the end of the day.

the amount the stock changes over the day = 122 - 93

the amount the stock changed over the day = $29

Generally, the stock decreased over the day.