Answer: a) $778.67 b) 19 years
Step-by-step explanation:
The formula you would use is
where a is the amount
n is the length of time
P is the principle
and r is the rate in decimal form
a)
b)
put your initial equation into a graphing calculator and use the table function to find that after 18 years it is worth 117 and in 19 years 86-