PLEASE HELP- thank you :)

Option A

a + s = 1650  ;   3.5a + 2b = 4580

Step-by-step explanation:

a > number of adult tickets

s > number of student tickets

Total tickets = $ 1650

a +s = 1650

Cost of 'a' number of adult tickets = 3.50*a = 3.5a

Cost of 's' number of student tickets = 2*s = 2b

Revenue raise = $ 4580

3.5a + 2b = 4580

b) the dogs need to shift their focus to human scent.

exa:

)

3+11

14

step-by-step explanation:

from this example, we can see that subtracting with integers is the same as adding the opposite. we can solve using a number line or by using the saying "keep, change, change" to us solve. it is important to remember that we can subtract a negative and end up with a larger number than we started with.