Let's solve your equation step-by-step:
x^2+6x-16=0
Factor the left side of the equation:(x-2)(x+8)=0
Set factors equal to 0: x-2=0 or x+8=0, x=2 or x=-8
Your answer is x=2 or x=-8, doesn't matter which, both are correct.
Hope this helps!:)
Answer:
Step-by-step explanation:

my second opinion would be you are correct, its b
Answer:
hardy har har
Step-by-step explanation:
Answer:
Karen will need 42 feet to use 3 guide wires to stabilize the tree.
Step-by-step explanation:
1 guide wire = 8 feet up + 6 feet from base
1 guide wire = 14 feet
3 guide wires = 14 feet + 14 feet + 14 feet
3 guide wires = 42 feet