Answer:
A powerful computer is purchased for $2000,
but on the average loses 20% of its value each
year. How much will it be worth 4 years from
now?
The equation to use is:
y = abx . The initial
value
a = 2000 . In this case the value is
decreasing so multiplier b is always found by
subtracting the percent decrease from the
number "one," so
b = 1! 0.2 = 0.8 . The time
is
x = 4 . Substituting into the equation and
using a calculator for the calculations:
y = abx
= 2000(0.8)
4
= 819.2 . In four years
the computer will only be worth $819.20.
Step-by-step explanation:
