Answer:
lol you deleted my answer loser
Step-by-step explanation:
Idk what are your questions?
This exponential growth/decay (in this case decay because r<1) of the form:
f=ir^t, f=final value, i=initial value, r=common ratio or "rate", t=time.
Since the population decreases by 4.5% each year the common ratio is:
r=(100-4.5)/100=0.955 so we can say
P(t)=8500(0.955^t)
....
7000=8500(0.955^t)
14/17=(955/1000)^t taking the natural log of both sides
ln(14/17)=t ln(955/1000)
t=ln(14/17)/ln(955/1000)
t≈4.22 years (to nearest hundredth of a year)
Since t is the years since 2010, the population will fall to 7000 in the year (2010+4.22=2014.22, more than four years will have elapsed) 2015.
Answer:
Each would pay $20.94
Step-by-step explanation:
Step 1: Find the total for the bill including the tip.
The bill is $52.35. To calculate 20% of this, multiply by 0.2 (or 20/100)
The tip is ($52.35)(0.2) = $10.47
Step 2: Add the tip to the total bill.
$52.35 + $10.47 = $62.82
Step 3: Divide the total bill by the number of people splitting the bill, in this case, 3
$62.82/3 = $20.94 per person
