Yes, 104 weeks is two or three days shy of two years, and 36 months is three years.
About 1095.
Roughly 834
Calculus is usually taught two years after Algebra two. Between Algebra two and Calculus is Trigonometry or Pre-Calculus. We teach it in A Texas school at grade 12.
After 5 years the area is 3/4 of what it was; after 10 years 3/4 of 3/4, or 9/16; after 20 years 9/16 x 9/16 = 81/256 = 0.3164; so 1-.3164 = 0.6836 or 68.36% disappears
There are 20 years in two decades.
260 years equal two centuries and six decades.
two
There are 200 decades in two millennium which is 2,000 years
Twenty years is two decades.
There are 3.5 decades in 35 years
There are 5 decades in 50 years.
230 years = 23 decades
16 decades and 4 years.
96 decades and 9 years.
There are 19 decades in 190 years.
There are 12 decades in 120 years.