a-
the equation is 5x=30, so we need to find the real-life problem that can be represented by x=30/5
let's analyze one by one
- total books, 5 books for student, 30 students, so x=5*30 this isn't
- donations (20+10=$30) and 5 times (20+10) so x=30+30*5 this one isn't
- (4+1)people and they spent $30, so each one pay x=30/5 this one IS
b-
Solve the equation,
x=30/5=6
x=6
c-
The value of x represents each one pays $6