Question

Three students have already enrolled for a creative writing class. The teacher will cancel the class if there are fewer than 10 students enrolled. Write three values for numbers of students needed to sign up so that the the creative writing class can be held

Answer 1

7, 10 and 15

Explanation:

Given

`S_1= 3` --- Students already enrolled

`Total = 10\ (less)`

Required

Determine the additional number of students needed for the teacher not to cancel the class

First, we need to calculate the number of students for the teacher to cancel the class.

Represent this with x.

So, we have:

`S_1 + x < Total`

Make x the subject

`x < Total - S_1`

Substitute values for Total and S1

`x < 10 - 3`

`x < 7`

This means that if less than 7 additional students come to the class, the teacher will cancel the class.

So, for the teacher not to cancel the class, the students must be 7 or greater (i.e. 7, 8, 9, 10....)