D because of the distribution property
Answer:
number 7 is y= 
Step-by-step explanation:
Answer:
The formula to find the sum of the first n terms of our sequence is n divided by 2 times the sum of twice the beginning term, a, and the product of d, the common difference, and n minus 1. The n stands for the number of terms we are adding together.
The correct answer is A. 10 bracelets
