Ineed on a overdue math homework .

don't try to be a troll by posting improper/incomplete answers as i will report you.

show all work and steps or else the teacher will add feedback saying "how did you get (math equation)" "this is not correct" and give a failing grade.

how come you need help? It is super easy. Just combine Like Terms.

https://www.khanacademy.org/math/cc-sixth-grade-math/cc-6th-expressions-and-variables/cc-6th-combining-like-terms/v/combining-like-terms-1

That is a website for help!

 r represents a significant linear correlation.

Step-by-step explanation:

GIven : Linear correlation coefficient: r = 0.543

Sample size: n= 25

Significance levle:

Degree of freedom : n-2 = 25-2=23

Now, we check r critical value table for value with df = 23 and .

Critical value = ±0.396  [From r critical value table]

Since r = 0.543 > 0.396, that means there is significant linear correlation.

Hence,  r represents a significant linear correlation.