Answer:
The correct answer is B. (2x and 7y)
Step-by-step explanation:
You cannot combine x to y therefore they are considered unlike terms .
Answer:
which ones do you need answered? all of them? want to help
Step-by-step explanation:
Answer:
The answer to this is: 132
Step-by-step explanation:
Answer: 195
Step-by-step explanation:
Cost per student = $4
Total number who attended = n
The cost of the total of student who attended will be cost per student multiplied by the total number of students, that is
Total cos = 4n
Since, they are to pay $140 , for publicity, then the total cost becomes
T = 4n - 140
From the last statement
4n - 140 ≥ 640
4n ≥ 640 + 140
4n ≥780
n ≥ 780/4
n ≥ 195
That means at least 195 students must attend if the science club is to earn at least $ 640
