Answer:
a) response variable
Step-by-step explanation:
The response variable is the variable that depends on other variables such as the independent or explanatory variable, it is the variable that is being tested. The response variable is also called the dependent variable.
In linear regression, the y variable is referred to as the response variable while the x variable is referred to as the explanatory or independent variable.
In this case the y variable is "the number of times they cough in a day" and this variation depends on the x variable "number of cigarettes a person smokes in a day".
Answer: 2(-2x+3)
Step-by-step explanation:
The answer to b is 24×600=14400
24=hours in a day
600=blooded pumped per hour
14400=the amount the blood is pumped a day
