The average walking speed r of a person living in a population P in thousands is modeled by the function, r(p) = 0.37 ln p + 0.05, where r is in feet per second. The population of Wilkes-barre is 48,000. Find the average walking speed of people living in Wilkes-barre

The average walking speed is 1.48 feet per second

Step-by-step explanation:

we have

where

r is average walking speed

p is the population  in thousands

In this problem we have

----> because p in the equation is in thousands

substitute the value of p in the equation

using a calculator

The amount Craig financed at the beginning(P) = 45000

Number of years he took to repay(T) = 5

Rate of interest(R) = 11%

Total interest he paid =

= 450 × 55 = 24,750

Hence, interest paid by him by the time his car is paid off was $24750.