Nouchi has two investment options. Option A offers 9% annual interest with a $5000.00 principal and contributions of $500 at the beginning of each month. Option B offers 8% annual interest with a $10,000.00 principal and
contributions of $300 at the beginning of the month.
If Nouchi plans to retire in 25 years, which option is the best choice for him?

Step-by-step explanation:

ok so  is 9% so 5000+450x-500

5000+(450)(25)−500

=15750

and and 8% 800 so 10000+800x-300

10000+(800)(25)−300

=29700

constant of proportionality = 3 and the equation is c = 3p.

step-by-step explanation:

c = kp   where c = amount of caffeine in mg., p = oz of pepsi and k is the constant of proportionality.

substituting the values given:

24 = 8k

k = 3.

the same value of k will be obtained if we substitute the other given values.