Answer:
n = 9
Step-by-step explanation:
7n + 5 = 68
7n + 5 - 5 = 68 - 5
7n = 63
7n / 7 = 63 / 7
n = 9
Answer:
1,680
Step-by-step explanation:
There are 8 students to choose for the first chair. After we choose one, we have 7 students to choose from for the second chair, 6 for the third chair, etc.
8 * 7 * 6 * 5 = 1680 (ans)
Answer: g=4
Step-by-step explanation:
Answer: a=10
Step-by-step explanation: