I went in order from top to bottom. don't know if this was what you meant...... (1,2), (2,-2), (3,-6), (4,-10).
Answer:
the 3rst one
Step-by-step explanation:
18 girls
Half of the students volunteer
15 don't -- so the other half must be 15 as well making there 30 students in the class.
If 12 are boys, then 30(students in class) - 12 (boys) = 18 girls
Answer:
2.5 Plus 40 hours only because is haft hours
