Which of the following values of x makes the rational expression below undefined? x-25/x+13 a. 13 b. 0 c. 25 d. -13

Option D

Step-by-step explanation:

We will check each option for the given expression (x-25)/(x+13)

(A). for x = 13

So expression is defined.

(B). for x = 0

So expression is defined.

(C). For x = 25

So expression is defined

(D). For x = -13

Function is not defined.

Option D is the answer.

find the magnitude of the trig term  

csc

(

x

)

−

1

by taking the absolute value of the coefficient.

1

find the lower bound of the range.

tap for more

y

=

−

2

find the upper bound of the range.

tap for more

y

=

0

the range is  

y

≤

−

2

or  

y

≥

0

.

(

−

∞

,

−

2

]

∪

[

0

,

∞

)

{

y

|

y

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,

y

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}

step-by-step explanation: