At the beginning of year 6, that means 5 years only have elapsed, thus t = 5.

I believe it could be 19.5
Answer:
a
Step-by-step explanation:
3. AC, AB
Step-by-step explanation:
A line segment consists lf a line with two endpoints(dots). AC is a line segment and so is CB but that isn't an option sl the next best thing is AB because it is also a line segment
According to the table, the given stack of numerals correspond to
15
7
19
13
11
0
(A shortcut for reading these numbers: each bar represents 5 and each dot represents 1. The disk just means 0. So for instance, 13 = 5 + 5 + 3 = 2 bars + 3 dots.)
Mayan numerals are expressed in base 20, so the number above is equivalent to
15×20⁵ + 7×20⁴ + 19×20³ + 13×20² + 11×20¹ + 0×20⁰
= 49,277,420