Answer:
50
Step-by-step explanation:
1000 ÷ 20 = 50
(Checking the answer: ) 50 packs of 20 cards would give him 1000 cards because 50 X 20 = 1000
Decay every two years over a period of t years:
Fourth option: f(t)=(0.75)^(t/2)
decay 2 times a year over a period of t years:
Second option: f(t)=(0.9306)^(2t)
Sixth option: f(t)=(0.8660)^(2t)
decay once per year over a period of t years:
First option: f(t)=(0.9306)^t
Third option: f(t)=(0.8660)^t
V=4*2,5^3=4*15,625=62,5 cubic units
The answer of the question is x.
