In this scenario, we start with the following expression:

The first step involves evaluating the quadratic component.
Next, we have:

The following step is to subtract the two resultant values:

It is clear that the outcome of this operation is a negative value.
Answer:
The expression results in:

Because 8+2=10, and when both values are scaled by 10, the equation 10 x 10 results in 100.
Each month she puts in 20......therefore annually she deposits (20 * 12) = 240 y = 240x + 200
Response:
The probability that a student has a pet, given they do not have any siblings is:
Option: D ( 60%)
Step-by-step breakdown:
Let A represent the situation where a student lacks a sibling.
Let B signify the occurrence that a student has a pet.
Consequently, A∩B refers to the event in which a student is without siblings but possesses a pet.
Let P denote the chance of an event happening.
We need to determine:
P(B|A)
From our knowledge:

From the data provided:
P(A)=0.25
and P(A∩B)=0.15
Thus,

which expressed as a percentage is:

Therefore, the probability is:
60%
Among the given options, number 3 is accurate. A line is classified as an undefined term since it represents something that lacks width or depth, yet it can extend infinitely in both directions, indicated by arrowheads.