Acopy machine depricicates at the rate of 15% each year. if the original cost fo the copy machine was $20,000 , what is the approximate value of the machine after 3 years

The approximate value of machine after 3 years = $12283

Step-by-step explanation:

Original cost of the copy machine = $20,000

Rate of depreciation each year = 15%

To, find cost of machine after 3 years.

Solution:

The depreciation equation can be given by:

where:

Final value

Original value

rate od depreciation in decimal form

time

Given values:

Using the values to find the value of machine after 3 years.

Thus, approximate value of machine after 3 years = $12283

56

step-by-step explanation:

the inequality is:

250c+180g≥950

step-by-step explanation:

let c denotes the number of days in a week   miyoko worked as a cryptographer.

and g denotes the number of days in a week she works as a geologist.

now we are given that she earns $250 for every day she works as a cryptographer,and earns $180 for every day she works as a geologist.

now miyoko's goal is to earn more than $950 this week.

hence, the inequality could be represented as:

250c+180g≥950