Answer:
m(x) = 20000(0.97)^x
Step-by-step explanation:
Given that :
Initial population, population in 1990, P = 20,000
Rate, r = 3% = 0.03
Number of visitors to the museum x years after 1990
Since population decreases, Decay formula
m(x) = Initial population * (1 - r)^x
m(x) = 20000(1 - 0.03)^x
m(x) = 20000(0.97)^x
Answer:
The amount left with Valentina is $10,000.
Step-by-step explanation:
The question is:
Valentina goes shopping at the mall with $50,000. She spends 3/5 of that amount on a diver and half the rest on a skirt. How much money does Valentina have left?
The original amount Valentina had was, <em>P</em> = $50,000.
Compute the amount spent on a diver as follows:
D =
of $50,000

The amount spent on a diver was, <em>D</em> = $30,000.
Amount left:
A = P - D
= 50000 - 30000
= 20000
Compute the amount spent on a skirt as follows:
S =
of $20,000

Amount left:
A₁ = A - S
= 20000 - 10000
= 10000
Thus, the amount left with Valentina is $10,000.
Answer: 
Step-by-step explanation:
With negative powers, 
do the same for s too
Answer:
480ft squared
Step-by-step explanation:
length= 40*0.30= 12
area= length×width
area=40×12
40×12= 480
Yes, because every time you subtract 7