Answer: 4.7
Step-by-step explanation:
The given function: [tex] f(t) = Pe^rt [/tex]
If the value of P = 4 and r = 0.04, then to find f (4), we need to substitute t = 4 in the given function , we get
[tex]f(4)=4e^{0.04\times4}\\\\\Rightarrow\ f(4)=4e^{0.16}\\\\\Rightarrow\ f(4)=4\times1.17351087099\\\\\Rightarrow\ f(4)=4.69404348397\approx4.7[/tex]
Hence, f(4)= 4.7
