Simplify the rational expression x^2-4/x^2+5x+6. state any restrictions on the variable.

The correct answer is option B.

Step-by-step explanation:

The given rational expression is:

Factor the numerator and the denominator:

Factor the numerator using difference of two squares and the denominator using factorization by grouping.

This function is defined if and only if the denominator is not zero.

That is: (x+3)(x+2)≠0.

x≠-2,x≠-3

We simplify now to obtain:

The correct choice is the second option.

no association

step-by-step explanation:

if you have eyes and you can use them efficiently you can see that it just looks like random dots like do a line of best fit and like they're so spread out it's such a weak association you might as well consider it nonexistent

b. 153 students do not participate in sports and seventy-five 12th graders were surveyed