Answer:
B
Step-by-step explanation:
on edge
Question:
A population of insects, in thousands, can be modeled using the function
, where t is time in months. Which statement best
describes the population of insects?
A. The population is decaying at a rate of 3% each month.
B. The population is decaying at a rate of 25% each month.
C. The population is growing at a rate of 75% each month.
D. The population is growing at a rate of 97% each month.
Answer:
A. The population is decaying at a rate of 3% each month.
Step-by-step explanation:
Given

Required
True statement about the function
From the options, we can see that we are to answer the question on the basis of decay and growing rates.
An exponential form is:

Compare to 

If
, then
r represents growth rate
else,
r represents decay rate
Since b < 0.97:





Answer:
(c) Equation which can be used to find r, the cost in dollars to park s nights is r = 24.99 s
Step-by-step explanation:
Here, the parking cost of 1 night at the airport = $24.99
Now, here the total number of nights the car is parked at airport = s
R = The total cost of parking s nights
Now, The cost for parking s nights = s x ( Cost of parking 1 night)
= s x ($24.99) = 24.99 s
Also the cost for parking s nights = r
⇒ r = 24.99 s
Hence, equation which can be used to find r, the cost in dollars to park s nights is r = 24.99 s
Simple, finding markdown, use these two formulas.
Markdown=Original-New
and
Percent Markdown= Markdown Amount/Original*100
So,
Markdown=612-450
M=162
Markdown%= 162/612*100
M%=0.2647*100
M%=26.5 (rounded)
Thus, there was a 26.5% decrease.
Answer:
(-3,4)
Step-by-step explanation:
to solve for x, make y=0
to solve for y, make x=0