Answer:
Step-by-step explanation:
The function is modeled after
where a is the initial amount and b is the growth/decay factor. If we start with 5000 bacteria, then a = 5000. The decay factor is determined by the rate at which the bacteria decrease. We know that rate at which the bacteria decrease is 60% because 40% are left alive; therefore, b = .4:
with a horizontal asymptote of y = 0, the first choice.
(88 + 92 + 96 + x) / 4 = 90
(276 + x) / 4 = 90
276 + x = 90 * 4
276 + x = 360
x = 360 - 276
x = 84 <=== he would need an 84
Answer: "A sporting goods store sold 2.5 times as many footballs
as basketballs last year."
Step-by-step explanation:
Power and chain rule (where the power rule kicks in because ):
Simplify the leading term as
Quotient rule:
Chain rule:
Put everything together and simplify: