Answer:
47.5 is correct
Step-by-step explanation:
use the Pythagorus theorem
31^2+36^2= BA^2
2257=BA^2
square root both sides
√2257= 47.50789408
round to the nearest tenth
47.5
x=6
-3 85-88 lets turn that around 88-85 is 3 but the problem is 85-88 so its -3
Your total cost will be 80