Which of the following demonstrates how the first 21 (on the left side of the triangle) is calculated using the combination pattern?
1
(
1
1
1
2
1
1
3
3
1
1
4
6
4
1
1 5 10 10 5 1
16 15 20 15 6 1
1 7 21 35 35 21 7 1
OA
71
- 21
(7-2)121
o
B.
2162
211
- 21
(21-2)121
-~-
---
-C)
-(1)-
Ос.
216
211
(21-7)171
-21
D
71
- 21
(7-7)17!

What is the length of an with endpoints a 3,2 and b 8,14

Whats the name of the vertical axis

Barney & noblet customers can choose to purchase a membership for $25 per year members receive 10% off all store purchases 1. how much would a member pay per year if he bought $50 worth of items each year? 2. write a slope-intercept equation that expresses how much a member pays per year using x to represent his purchases per year 3. how much would a member have to spend per year to pay off his membership fee?