The cost equation has a constant rate of change, so this is a line of the form:
y=mx+b, you are told that there is a flat fee of $5 and an hourly rate of $2 so
y=2x+5
The y-intercept (the value of y when x=0) is 5. The point (0,5) on the line.
This is an exponential growth/decay problem...
F=Ir^t, F=final value, I=initial value, r=rate, t=time, in this case:
F=I(1.03)^t and they just want to know when F=2I so
2=1.03^t take natural log of both sides...
ln2=t*ln1.03
t=ln2/(ln1.03)
t≈23.45
So it will take approximately 23.45 years for the population to double..
1990+23.45=2013.45
So during the year of 2013 the population will have double from its 1990 level.
Answer:
Median = 13
Step-by-step explanation:
Arranging it in ascending order:
=> 2,4,6,10,13,13,14,16,20
Median is the middlemost no.
So,
=> Median = 13
Multiply the cost of the meal by 0.15 ( 15% as a decimal).
8.95 x 0.15 = 1.34
The amount of the discount would be $1.34
Extra:
If you need to find out how much a senior citizen pays, you would subtract the amount of the discount from the original price:
8.95 - 1.34 = $7.61
