As smart phones have grown in popularity, regular cell phones have fallen out of favor. As a result, one electronics retailer estimates that 20% fewer regular cell phones will be sold every
year. If the retailer sells 810,000 regular cell phones this year, how many will be sold 3 years
from now?
If necessary, round your answer to the nearest whole number.

what's that

none of the above.

for one of the equations to be used in the process, there has to be a term in the equation since squared is .

since there is only a term in the first equation, we cannot derive a from completing the square.

solving with completing the square

d. 8

step-by-step explanation:

the given radical expression is:

we can rewrite this as:

we express as square numbers to get;

the exponents will now cancel out to give.

the correct answer is d

28

step-by-step explanation:

because that's the answer