A linear function is y=mx + b so yes (assuming + sign at end is accidental)
The points A and B and the center O of the circle form a right angle and AO = radius.
So by Pythagoras
16^2 = 15^2 + AO^2
AO = sqrt (16^2 - 15^2)
AO ( radius) = sqrt31 = 5,57 feet answer (to nearest hundredth)
Answer:$40.24
Step-by-step explanation: