Question

What is p(-2)?

Rounded to the nearest tenth please:)

Answer 1

0.2

Explanation:

`\text{f(x) = }(90)/(9+(50)/(e^x))`

`\text{f(-2) = }(90)/(9+(50)/(e^(-2)))`

`\text{f(-2) =} ( 90 )/(9 + 50*e^2)`

Now we can work out the denominator separately.

9 + 50*e^2

9 + 50*7.389

9 + 369.45

378.45

Now use this number to get the final answer.

f(-2) = 90 / 378.45

f(-2) = 0.237 To the nearest tenth

f(-2) = 0.2

There was a lot of movement for that e^x factor make sure you study carefully how that moved around and why. It's a good question. Get what you can from it.