Answer:
$9$
Step-by-step explanation:
Given: Thea enters a positive integer into her calculator, then squares it, then presses the $\textcolor{blue}{\bf\circledast}$ key, then squares the result, then presses the $\textcolor{blue}{\bf\circledast}$ key again such that the calculator displays final number as $243$.
To find: number that Thea originally entered
Solution:
The final number is $243$.
As previously the $\textcolor{blue}{\bf\circledast}$ key was pressed,
the number before $243$ must be $324$.
As previously the number was squared, so the number before $324$ must be $18$.
As previously the $\textcolor{blue}{\bf\circledast}$ key was pressed,
the number before $18$ must be $81$
As previously the number was squared, so the number before $81$ must be $9$.
I hope this hepls you
f⁻¹(x)=3x+7
f⁻¹(4)=3.4+7=19
Answer:
Division can be represented with ÷ as well.
Answer:
$3450
Step-by-step explanation:
Here, P = $3000, N = 1.5 years, R = 10%
Amount of down payment
= $3000 + $450
= $3450
Answer:
Step-by-step explanation:
160miles • 330miles= 52,800square miles
Now it wants the population density in people per square miles, so you need to divide the population by the number of square miles.
4779736/52800=90.5 which is about 91people per square mile.
