Suppose that the value of a piece of property has been decre
     Suppose that the value of a piece of property has been decrease at a continuous rate of 5  per year and is expected to decrease in that manner. Right now , the property is worth  160,000 let v {  } give the value of the property  year from now   
  
  Solution
the growth / decay formula, A = Pert, where \"A\" is the ending amount of whatever you\'re dealing with money
\"P\" is the beginning amount of that same \"whatever\",
\"r\" is the growth or decay rate, and \"t\" is time. The above formula is related to the compound-interest formula, and represents the case of the interest being compounded \"continuously\".
so here A= V(t)
V(t) =$160000 e0.05t
b).
half of 160000 is 80000
so 80000 =160000e0.05t
   1/2 = e0.05t
 ln(1/2) = 0.05t
t = 13.9
by the end of the 14 th the money bomes half of the original value

