base x height or side x side.
Step-by-step explanation:
to find the area, you multiply a number x a number. the fomula is base x height or side x side.
The rate of 28,000% per month is extremely big. I believe
the correct monthly rate is 2.8% (correct me if I am wrong though). Next time
kindly check the given values.
Rate is expressed in a factor of:
(1 + r)^n
where r is the rate and n is the number of months
First we calculate for the rate in a year (1 year = 12
months). We know that the rate must be constant, therefore:
rate in a month = rate in a year
(1 + 0.028)^1 = (1 + r)^(1/12)
r = 0.3929
Therefore there is an increase of about 39.29% in a year.
Then we calculate for the rate in a day (1 month = 30
days). The rate must also be constant, therefore:
rate in a month = rate in a day
(1 + 0.028)^1 = (1 + r)^(30)
r = 9.21 * 10^-4
Therefore there is an increase of about 0.092% per day.
Karissa ->. Distance = speed x time
Take the distance she travels to be x
X = 17t
Alexandra -> she would meet karissa at 261 - the x miles karissa travelled hence we get the equation
(261 - x ) = 12t
Rearrange so x is the subject
X = 261 - 12t
Next set the two equations equal to each other so you get
17t = 261 - 12t
Now solve for t
29t = 261
Divide each side by 29 To get the Value of t
t = 9 hours ( remember to take the units into account)
Using the equation y=9x you can substitute x for the hours. Y=9 times 5 and y=9 times 8. Y=45 and y=72. The range is $45-$72