If f(x) = sqrt (4x+9) +2 which inequality can be used to find the domain of f(x)

Step-by-step explanation:

the domain of x represents the values that x can be without the function being undefined.  the function of square rooting is undefined for negative numbers.  so in order to find the domain, you must ensure that the "stuff" in the square root is greater than, or equal, to zero.  hence, (4x+9)>= 0.  the answer is B

For this case we have the following function:

By definition, the domain of a function is given by all the values for which the function is defined.

For the given function to be defined, then the root argument must be positive, that is:

Option B

answer: -0.5 would be the most likley outcome

step-by-step explanation:

the solution of the equation is 2.23 ⇒ answer b

step-by-step explanation:

* lets revise the meaning of exponential function

- the form of the exponential function is y = ab^x, where a ≠ 0, b > 0 ,  

  b ≠ 1, and x is any real number

- it has a constant base b

- it has a variable exponent x

- to solve an exponential equation, take the log or ln of both sides,  

  and solve for the variable

* lets solve the problem

∵

- the base is 7 and the exponent is x

- insert ㏑ in both sides

∴

- use the rule

∴ x ㏑(7) = ㏑(77)

- to find x divide both sides by ㏑(7)

∴

* the solution of the equation is 2.23 to the nearest 2 decimal places