D is the answer to this question
Answer:
see below
Step-by-step explanation:
1. 0 = (r + 1)(r + 8)
Using Zero Product Property, r = -1, r = -8
2. h(r) = (r + 1)(r + 8)
= r² + 9r + 8
= (r + 9/2)² - 81/4 + 8
= (r + 4.5)² - 12.25 (Complete the square)
Vertex: (-4.5, -12.25)
Answer: 100 ml each hour.
Step-by-step explanation:
1000 -400 =600 used from original amount.
Divide 600/6 = 100 ml per hour.
Yessndndndd dndndndndndndndndndd
39/6= 6.5 then u multiply
6.5 times 4 = 26
which 26 is your answer
