Final answer:
The value of x, 3.99999, is less than 4. The sum of a geometric series cannot be calculated in this case. The number 4 has 0 decimal representations and numbers that have more than one decimal representation are rational numbers with recurring decimals.
Step-by-step explanation:
The value of x, 3.99999, is less than 4. Therefore, x < 4.
To sum a geometric series, we use the formula: S = a / (1 - r), where S is the sum, a is the first term, and r is the common ratio. However, since we only have x = 3.99999, which is not a geometric series, we cannot calculate its sum using this formula.
The number 4 has 0 decimal representations. It is an integer and can be represented as a whole number
Numbers that have more than one decimal representation are all rational numbers that have a recurring decimal representation, such as 1/3 = 0.3333...