Let f(x)= 8/1+3e^-0.7x
what is the value of f(-1)
round answer to the nearest hundredth.

f (-1) = 1.14

Step-by-step explanation:

We have the function

To find f(-1) you must substitute x = -1 in the function.

Then we have left:

solving the power we have...

Now solve the function  and finally we have to:

f (-1) = 1.14

5.17

Step-by-step explanation:

We are given the following function and we are to find its value when x is equal to -1, rounding it to the nearest hundredth:

So substituting the given value of x in the given function:

Rounding it to the nearest hundredth we get 5.17.

a

step-by-step explanation:

answer:   28.56 feet (approx)

step-by-step explanation:

since, triangle abc has measure of angle c equal to 55 degrees, measure of angle abc equal to 90 degrees, and length of bc equal to 20 feet.

we have to find out the measurement of segment ab.

therefore, tan 55° =

but bc = 20 feet.

⇒ tan 55 ° =  

⇒ ab = 20 × tan 55 °

⇒ ab = 20 × 1.42814800674

⇒ ab = 28.5629601348   ≈ 28.56 feet