A machine makes 8-inch, 9-inch, and 3-inch parts. During a certain da…

Question

Prompt

A machine makes 8-inch, 9-inch, and 3-inch parts. During a certain day, the number of 8-inch parts that the machine makes is 4 times the number

n

of 9-inch parts, and the number of 3-inch parts is 30. During this day, the machine makes 100 parts total. Which equation represents this situation?

8 (4 n) + 9 n + 3 (30) = 100

8 n + 9 n + 3 n = 100

4 n + 30 = 100

5 n + 30 = 100