Given that f(x)=-x^2+12x-28 has a relative maximum at x=6 choose the correct statement. A. f' is negative on the interval (-infinity,6)
B. f' is positive on the interval (-infinity, infinity)
C. f' is negative on the interval (6, infinity)
D. f' is positive on the interval (6,infinity)
E. none of these

f(x) has value 150 at x= 0

and 0 at x= 3

so d(f(x))/dt = slope = -150/3 = -50

1. 28 over 9

2. i don't know this i'm sorry : (

3. 19, because the number of books is 95 over 4 divided by 5 over 4

4. 7 and 1 over 3 divided by 1 over 6

5. 9.5

6. $124

7. 2 over 9

8.   (−$8) ⋅ 12

9. -67.2

10. $ 170.00

11. -27 feet

12. 5.7 with bar over 7

hope i !