Find the exponential function that satisfies the given conditions:


Initial value = 67, decreasing at a rate of 0.47% per week

f(t) = 0.47 ⋅ 0.33t

f(t) = 67 ⋅ 1.47t

f(t) = 67 ⋅ 1.0047t

f(t) = 67 ⋅ 0.9953t

Respuesta :

Answer-

The exponential function that satisfies the given conditions is [tex]f(t)=67(0.9953)^t[/tex]

Solution-

This can be represented as exponential decreasing function,

[tex]f(t)=a(1 - r)^t[/tex]

Where,

  • a = starting amount = 67
  • r = rate = 0.47% = 0.0047
  • t = week

Putting the values,

[tex]\Rightarrow f(t)=67(1 - 0.0047)^t[/tex]

[tex]\Rightarrow f(t)=67(0.9953)^t[/tex]

Therefore, the exponential function that satisfies the given conditions is

[tex]f(t)=67(0.9953)^t[/tex]

Answer:

a = starting amount = 67

r = rate = 0.47% = 0.0047

t = week