Zeller industries bought a computer for $4600. It is expected to depreciate at a steady rate of 20% a year. When will the value have depreciated to $2000?

About 3.73 yrs

Step-by-step explanation:

This is a compound decay problem. Which has the formula:

Where

F is the future amount (we want it to be 2000)

P is the present amount (which is 4600)

r is the rate of decay, depreciation (20% per year means 20/100 = 0.2)

t is the time in years (which we want to find)

Substituting, we find:

Now we take natural log (Ln) of both sides and solve:

So, it will take about 3.73 years for the value to depreciate to $2000

answer: the value should be used for i in the formula of calculation the monthly payment , the interest rate per period is 0.85.

step-by-step explanation:

the given rate of interest i= 85%

in calculating the monthly payment for a loan with an interest rate compounded monthly, the value of the interest rate per period we use in the formula must be in decimal form.

to convert it in decimal, we divide it by 100, we get

hence, the value should be used for i in the formula of calculation the monthly payment , the interest rate per period is 0.85.

(x, y)→(x − 8, y − 7)

step-by-step explanation:

enjoy!