Answer:
You can model a data using a linear function when the dependent variable is a multiple of the independent formula plus another constant by the y-intercept. The constant multiple is represented by the slope. In real life problems, linear function is applied when you want to determine the cost given with a slope which is represented by cost per unit time. For example, the cost of wifi connection is $10/month plus $2 inclusive for phone charges. The linear function would be:
C = 10t + 2
where C is the cost and t is time in months
Step-by-step explanation:
Answer: The correct option is
(B) 
Step-by-step explanation: We are given to select the rational number that is also an integer :

We have
not an integer.
an integer.
0.24 and 2.4 are not integers, they are just rational numbers.
Thus, the required rational number that is also an integer is 
Option (B) is CORRECT.
Answer: 225
<u>Step-by-step explanation:</u>
n₁ = 2(1) - 1
= 2 - 1
= 1
n₁₅ = 2(15) - 1
= 30 - 1
= 29


= 15 * 15
= 225