Answer:
5n
The coefficient is 5
Explanation:
For day 1; he fill 5 cups
For day 2; he fill 5 + 5 cups
For day 3; he fill 5 + 5 + 5 cups
For day 4; he fill 5 + 5 + 5 + 5 cups
For day n; ?
The sequence is 5, 10, 15, 20, ...
The sequence increases linearly.
a = 5, d = 5, n = ?
Using the Formula for nth term of a sequence, we have:
![T_(n) = a + (n - 1)d\\T_(n) = 5 + (n - 1) 5\\T_(n) = 5 + 5n -5\\T_(n) = 5 - 5 + 5n\\T_(n) = 5n](https://img.qammunity.org/2021/formulas/mathematics/high-school/vvspm004qmxlrh0ugwe2jyoqrw4mp0d24n.png)