Question

Don’t know how to solve.

Answer 1

Answer:

$122.88

Step-by-step explanation:

the phone decreases by 20% each year , that is

(100 - 20)% = 80% = $\frac{80}{100}$ = 0.8

the phone reduces by a factor of 0.8 each year , then after 4 years

value = $300 × $(0.8)^{4}$ = $122.88