Answer:
28.85
Step-by-step explanation
Keanu has decided to save a fixed amount of 70,000 for a given period. We would need to calculate the number of years to achieve 7,796,223 using the FVIFA formula (Future value interest for an annuity)
Fixed payment× FVIFA=Future value
FVIFA =

where r is the periodic rate (9%)
and n is the number of periods
therefore; 70000×
=7796223
=(7796223×0.09)/70000
n=27.85
However, since Keanu will not invest until the end of the first year, he will spend 28.85 years to achieve his goal