Question

Let f(x)=81+3e−0.7x .

What is the value of f(−3) ?



Round the answer to the nearest hundredth.

Answer 1

5.85

Explanation:

Answer 2

`f(-3)=91.25`

Explanation:

Given :f(x)=81+3e−0.7x

To Find: Value of f(−3)

Solution:

`f(x)=81+3e−0.7x`

Putting x = -3

`f(-3)=81+3e−0.7*(-3)`

`f(-3)=81+3e+2.1`

`f(-3)=83.1+3e`

Since the defined value of e = 2.718

⇒
`f(-3)=83.1+3*(2.718)`

⇒
`f(-3)=83.1+8.154`

⇒
`f(-3)=91.25`

Thus the value of
`f(-3)=91.25`