Answer:
x = 7
Step-by-step explanation:
QY = 5x
YZ = 18
QZ = 53
Thus:
QY + YZ = QZ (segment addition postulate)
5x + 18 = 53
5x = 53 - 18 (subtraction property of equality)
5x = 35
Divide both sides by 5
x = 7
Because the account is compounded continuously, Euler number is required
e = 2.7182818
It’s 2 you have 1 and add another gets you 2
let's recall that an inverse function has the same pair of coordinates as the original function, but backwards, or namely the inverse's range is the original's domain.

see screenshot
general formula is
r² = (x - x-center)² + (y - y-center)²
note that I choose a radius of 6 arbitrarily. you didn't provide the information about the radius, but just put in yours