Pls explain 4 brainliest! may the 4th be with you

I'd say it's option A. To find Betsey's age, you should solve for Waldo's age first.
b = w + 11
b = 3w - 15
These two values are equivalent:
3w-15 = w+1
Here, it's not necessary, but I'll solve it:
2w = 16
w = 8
Waldo is 8 yrs. old, and Betsey is 19

Since b = w + 11 and b = 3w -15
so you  have
w +11 = 3w - 15

answer is
A. solve w + 11  = 3w - 15 to find w

40 because it’s just a little longer than 32 feet