The answer is the first option
2t + j = 80
3(0.5)t + 2(0.5)j = 70
j = 80 - 2t
1.5t + j = 70
1.5t + 80 - 2t = 70
-0.5t = 70 - 80
-0.5t = -10
t = -10/-0.5
t = 20
j = 80 - 2t
j = 80 - 2(20)
j = 80 - 40
j = 40
so ur answer is C
Answer: "13,000 books" represents the population.
"200" books represents the sample.
Step-by-step explanation:
- A population is the term that denotes a whole large possible group of individuals, objects, events or measurements.
- A subset of population is known as ample.
- When population is too large to the researcher , then it uses sample to represent the entire population.
Here, "13,000 books" represents the population.
"200" books represents the sample which is a subset of 13,000 books.
First graph your x and y intercept then pick any two points on the line.

that's the equation used to find your slope
Example:
(4,2) (8,6) let's say those are the points you pick from the line
so then you subtract 6-2=4 (6 is your y2 and 2 is your y1)
then subtracts 8-4=4 (8is your x2 and 4 is your x1)
then your left with

if you can reduce the reduce in this case you can which leaves you with

and that's how you find the slope
Answer:
15
Step-by-step explanation:
I'm not really sure how, try telling her to ask her teacher, it's kinda hard to explain but, yeah 15.