Every seventh-grade student at martin middle school takes one world language class. one-tenth of the seventh-grade students take french. eighteen seventh-grade students take french. which equation represents s, the total number of seventh-grade students at the middle school? 18= 0.1s 18=10/s s/0.1=18 10s=18

Option (A) 18 = 0.1s

Step-by-step explanation:

Every seventh-grade student at Martin Middle School takes one world language class.

Now we will form the equation as per statement of the question.

Let total students of seventh-grade = s

" one tenth of seventh grade students take  French."

" Students who took French were 18."

So of s = 18

(0.1)s = 18

therefore, Option (A) 18 = 0.1s is the answer.

b.an increase in a causes b to decrease