
The formula of the sum of the arithmetic sequence:

calculate:

substitute

Your answer is:
If you are asking to simplify, this is what I got. Hope I was able to help
Answer:
Y=x + 7
slope = 1, the coefficient of the x term, an implicit one
plug the point y=4, x=-3 into the equation, 4=-3+7 = 4, it passes through the point (-3,4)
Step-by-step explanation:
hope it help
Answer:
(1,3)
Step-by-step explanation:
I hope it will help u all
7(-3) is an example of multiplication. What the question wants you to do is multiply the outside number (7) by the inside number (-3).
Basically you are just multiplying -3 x 7.
Your product is -21