From the explanation below,
a= -10 and b= -4
Answer:
b = (20*3+11+13)/10
Step-by-step explanation:
First add the number of people on the trip
There are 3 classes
20*3 is the numbers of students since there are 20 students per class
11 teachers and 13 parents
20*3+11+13
Then divide by the number of people per boat
(20*3+11+13)/10
The number of boats needed is
b = (20*3+11+13)/10
Answer: A
Step-by-step explanation:
Conclusion: You found a snake nest