For what value of x is the rational expression below undefined?
2x + 4
x -7

c. 7
od. 2

The value of x is 7 ⇒ answer c

Step-by-step explanation:

* Lets explain how to solve the problem

- The rational expression has a numerator and a denominator

- Ex: f(x)/g(x) is a rational expression where f(x) is the numerator and

  g(x) is the denominator

- The fraction is undefined if its denominator is 0

- If g(x) = 0 then the rational expression f(x)/g(x) is undefined

* Lets solve the problem

∵ The rational expression is

∴ The numerator is 2x + 4

∴ The denominator is x - 7

- Put the denominator equal zero to find the value of x which makes

 the denominator equal zero

∴ x - 7 = 0 ⇒ add 7 to both sides

∴ x = 7

* The value of x is 7

x ≥ 18 is your answer

step-by-step explanation:

let "a number" = x

(2/3)x + 17 ≥ 29

isolate the variable (x). do the opposite of pemdas (parenthesis, exponent (& root), multiplication, division, addition, subtraction).

first, subtract 17 from both sides.

(2/3)x + 17 (-17) ≥ 29 (-17)

(2/3)x ≥ 29 - 17

(2/3)x ≥ 12

next, multiply 3/2 to both sides to isolate the x

(3/2)(2/3)x ≥ 12(3/2)

x ≥ 12(3/2)

simplify. multiply, then divide

x ≥ (12 * 3)/2

x ≥ (36)/2

x ≥ 18

x ≥ 18 is your answer

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jml angle lkj & angle mj = lm