Answer:
[tex]f(-3)=91.25[/tex]
Step-by-step explanation:
Given :f(x)=81+3e−0.7x
To Find: Value of f(−3)
Solution:
[tex]f(x)=81+3e−0.7x[/tex]
Putting x = -3
[tex]f(-3)=81+3e−0.7*(-3)[/tex]
[tex]f(-3)=81+3e+2.1[/tex]
[tex]f(-3)=83.1+3e[/tex]
Since the defined value of e = 2.718
⇒[tex]f(-3)=83.1+3*(2.718)[/tex]
⇒[tex]f(-3)=83.1+8.154[/tex]
⇒[tex]f(-3)=91.25[/tex]
Thus the value of [tex]f(-3)=91.25[/tex]
