6. is Trapezoid.
7. is all 17.
8. is B.
5 i can't understand so just wild guess on that one
I think the answer is 30.8 .
I need help with this question too but less hope we get a answer
The best step to do next is to add 80 to both sides of equation:
5 ( x² + 8 x ) + 80 = 14 + 80
and since 80 = 5 · 16
5 ( x² + 8 x + 16 ) = 94 Answer : B )
After that we will continue like this:
5 ( x + 4 )² = 94
( x + 4 )² = 18.8 ... etc