There are 25 total mc questions on carla's quiz. each question has 5 possible answer choices. If she randomly guesses on each question, what is the expected number of questions she'll get correct?

answer:

(-8,7)

explanation:

we know that  

f

(

−

3

)

=

7

therefore, if we wish to get the output as 7, in the function, we need to have our input to be -3.

looking at the function  

f

(

x

+

5

)

, what should the value of x be, such that the input in the function becomes 7?

we simply equate the terms,

x

+

5

=

−

3

x

=

−

8

thus, the point on the new function would be  

(

−

8

,

7

)

no this is a nonlinear negative

the answer is c: divide the arc's degree measure by 360°, then multiply by the circumference of the circle.