He function f f is given by f(x)=0.1x4−0.5x3−3.3x2+7.7x−1.99 f ( x ) = 0.1 x 4 − 0.5 x 3 − 3.3 x 2 + 7.7 x − 1.99 . For how many positive values of b b does limx→bf(x)=2 lim x → b f ( x ) = 2 ?

3

Step-by-step explanation:

We are given that

We have to find the positive value of b.

Let

Using Discartes' rule of sign

There are number of sign changes are 3.

Therefore, the positive real roots are 3 or 1.

There are number of sign changes are  1 .

Therefore, negative real roots  are 1.

When negative root is 1 .Then , positive real roots are 3 because total number of roots are 4.

Hence, positive values of b=3

describing distributions is one of the key skills you’ll need to earn a high score on the ap statistics exam. if you need proof of this, just flip through some past exam questions, which can be found at the collegeboard website. you’ll notice that the first free response question is almost always a question requiring you to look at a graph and describe it.

step-by-step explanation: just trying to get points sorry : (