Question

Let f(x)=81+3e−0.7x . What is the value of f(−1) ? Round the answer to the nearest hundredth. Enter your answer in the box.

Answer 1

Answer:

 f(-1)=89.85      

Step-by-step explanation:

Given : Function - $f(x)=81+3e-0.7x$      

To find : f(-1) nearest to hundredth

Solution :

step 1- Write the function

$f(x)=81+3e-0.7x$  

Step 2- Put the value of x=-1

$f(-1)=81+3e-0.7(-1)$  

Step 3- Solve

$f(-1)=81+3e+0.7$  

$f(-1)=81.7+3e$  

Value of e is a Euler number e=2.718

$f(-1)=81.7+3(2.718)$  

$f(-1)=81.7+8.154$  

$f(-1)= 89.854$

Round to nearest hundredth f(-1)=89.85

Answer 2

F(-1)=81+3e-.7(-1)

enter into scientific/ graphing calculator
f(-1)=89.85