A.) P(t) = 130t - 0.4t^4 + 1200
The population is maximum when P'(t) = 0
P'(t) = 130 - 1.6t^3 = 0
1.6t^3 = 130
t^3 = 81.25
t = ∛81.25 = 4.3 months.
Maximum population P(t)max = 130(4.3) - 0.4(4.3)^4 + 1200 = 1,622
b.) The rabbit population will disappear when P(t) = 0
P(t) = 130t - 0.4t^4 + 1200 = 0
t ≈ 8.7 months
Question:
Solution:
According to the given equation, the entrance fee is 5.50 and the fixed price per ball is 0.80n. Thus, the price for 10 balls, NOT INCLUDING the entrance fee (5.50), would be:
we can conclude that the correct answer is:
8.
Answer:
12x-8y
Step-by-step explanation:
add 10x and 2x, this gets 12x, and add -5y with -3y, which gives you -8y. Add both of these values together and you get 12x-8y
