Please help me find x

16.6

Step-by-step explanation:

a² + b² = c²

7² + b² 18²

49 + b² = 324

Subtract 49 from both sides

b² = 275

√b² = √275

b = 16.583

16.583 ≈ 16.6

Given that the value of a car that costs $17900 depreciates at 12.25% per year, the value of the car in 10 years time will be:
The depreciation follows exponential decay:
V(t)=Pe^(-rt) or P(1+r/100)^(-nt)
where:
principle,P=17900
rate,r=12.25=0.1225
time,t=10 years
therefore the value after 10 years will be:
V(10)=17900*e^(-0.1225×10)
=$5258.30