For what values of the variables are the following expressions defined? 1/x+7

An expression f(x) is undefined when we have a zero in the denominator,

if our expression is

f(x) = 1/(x +7)

then the denominator is x + 7, and this is only zero when x = -7.

Then, we have that our expression is defined for all the real values except x = -7

we can write this set as:

D = {x ∈ R ∧ x ≠ -7}

(which says "x is a real number and x is different than negative seven")

yes. we do proportions in probabilities.

answer: what is the conflict?

step-by-step explanation:

*what has happened to new york city?

*what is in the time capsule?

* what did the kidz see that gave them hope?

*what will they do with what they find?

* how will they save the city?

* what challenges will they face along the way?

*what big choice will they make at the climax of the story?

* what lesson do they learn at the end of the story?