-10 + (-15) =
+
what do i do first

-15 then -10   = -25 we can only take one sign that accompanies the -10 and put in front of the brackets.

Step-by-step explanation:

-10 + (-15) = -25

just like (-15) -10 = 25

This is because ( ) is order of parenthesis Brackets first.

ln(x+3)-4

Step-by-step explanation:

The function ln(x) is not defined for x=0 (goes towards - infinity), so notice that the function in the graph is well defined for x=0, but has the behavior of diverging towards minus infinity at x=-3. therefore, there has been a translation of 3 units to the left. This involves adding 3 units to the variable x, with the transformation: ln(x+3).

Then, the given graph shows that the ln function was also shifted down in order to render negative values in the vicinity of x=0, therefore the function that is most applicable is the one that after shifting the graph to the left, brings it down 4 units with:

ln(x+3) -4