PLEASE HELP cant remember how to do

x=-1

Step-by-step explanation:

if I understand correctly, you need to find where x^2 + 4x + 8 is equal to 2x+7, so basically where they intersect, and you must do it without calculations

in the table there is just one value of x for which the value of both y for both equations is the same and it is x = -1

c.

step-by-step explanation:

she should of added 9^2 and 12^2. that is because it is a^2+b^2=c^2. c^2 is the hypotenuse and should always be bigger than the other two numbers. which is why she should of added 9 squared and 12 squared together instead of 15 squared.