On school trip ,the students are spilt into equal groups. there are 18 students in 3 groups.
how many groups are needs if there are 54 students?

9 groups

Step-by-step explanation:

18 students split to three groups having 6 students each

So 54 students = 6 × 9

So 9 groups

choice b is correct

step-by-step explanation:

we have been given the following system of linear inequalities;

we are required to graphically determine the solution to these system of inequalities. using a graphing tool, the solution is as shown in the attachment below;

answer: i think it is (1,-2)