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xxMikexx [17]
2 years ago
8

Help with this exponential function!

Mathematics
1 answer:
butalik [34]2 years ago
7 0

The population size after 6 years and after 8 years are 147 and 169 population respectively

<h3>Exponential functions</h3>

The standard exponential function is expressed as y = ab^x

where

a is the base

x is the exponent

Given the function that represents the population size P (t) of the species as shown;

p(t)=\frac{550}{1+5e^{-0.1t}} \\

For the population size after 6 years

p(t)=\frac{550}{1+5e^{-0.1(6)}} \\P(6)=\frac{550}{3.744}\\ P(6)=147 population

For the population after 8 years

p(t)=\frac{550}{1+5e^{-0.1(8)}} \\P(8)=\frac{550}{3.2466}\\ P(8)=169 population

Hence the population size after 6 years and after 8 years are 147 and 169 population respectively

Learn more on exponential function here: brainly.com/question/2456547

#SPJ1

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A new motorboat costs $6000. The value of the boat decreases by 15% each year. What is the value of the boat after 3 years?
Elodia [21]

Answer:

 The value of the boat after 3 years is \$3,684.75  

Step-by-step explanation:

we know that

The  formula to calculate the depreciated value  is equal to  

V=P(1-r)^{x}  

where  

V is the depreciated value  

P is the original value  

r is the rate of depreciation  in decimal  

x  is Number of Time Periods  

in this problem we have  

P=\$6,000\\r=15\%=15/100=0.15\\x=3\ years

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3 years ago
The average person drinks one pint of milk a day. At this rate, how many gallons will a person drink in a leap year.
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3 0
2 years ago
A certain forest covers an area of 4500 km^2. Suppose that each year this area decreases by 8.75%. What will the area be after 5
Virty [35]

The area of forest after 5 years is 2846.93 square kilometer

<em><u>Solution:</u></em>

Given that, A certain forest covers an area of 4500 square kilometer

Suppose that each year this area decreases by 8.75%

To find: Area after 5 years

<em><u>The decrease function is given as:</u></em>

y = A(1-r)^t

Where,

y is the value after t years

A = initial amount

r = decreasing rate in decimal

t is the number of years

Here in this sum,

A = 4500

t = 5 years

r = 8.75 \% = \frac{8.75}{100} = 0.0875

<em><u>Substituting the values in formula, </u></em>

\begin{aligned}&y=4500(1-0.0875)^{5}\\\\&y=4500(0.9125)^{5}\\\\&y=4500 \times 0.632651\\\\&y=2846.93\end{aligned}

Thus the area of forest after 5 years is 2846.93 square kilometer

8 0
3 years ago
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