Answer: D. 16.33
Step-by-step explanation:
X: represents how many weeks
N: represents books per week
B: <span>represents </span>books she has at anytime
So the recursive formula would be: 100 - XN = B
Answer:
blue marble 12/50. tails 20/50
Step-by-step explanation:
12/50×20/50 =240/2500= 12/125 =9.6%
The correct answer is b), or x² = -12y.
Explanation:
This equation may be written in standard form as

The coefficient in front of x² is negative so the curve is downward.
The vertex has coordinates (0,0).
The vertex is equidistant from the directrix and the focus, so the focus is (0, -3).