Answer:
D
Step-by-step explanation:
Because -7+6 would be -1 and two negatives have to add together to get a lesser negative number. Also YOU COULD HAVE JUST USED A CALCULATOR!!!!!!
Answer:
f(x) crosses the x-axis, then
f(x)=(x+4)^6(x+7)^5 = 0
=> x+4 =0 or x+7=0
=> x =-4 or x = -7
I'm pretty sure its 100
-500+600=100