1139*15%=170.85
1139-170.85=968.15
FINAL ANSWER= mrs.bala payed $968.15
60.
You got backwards. Usually, you would divide by the bottom and multiply by the top.
This time, you do 9 divided by 3 which is 3. Then 3 multiplied by 20 which is 60.
A = a^2.....where " a " is the length of one side
A = 79
79 = a^2...take sqrt of both sides, eliminating the ^2
sqrt 79 = a
8.89 = a
so the length of one side is approximately 8.89 ft <==
Answer:
Function for given situation is : 
Value of computer after 4 years = $720.3.
Step-by-step explanation:
Given that the value of a $3000 computer decreases about 30% each year. Now we need to write a function for the computers value V(t). then we need to find about how much will the computer be worth in 4 years.
It clearly says that value decreases so that means function represents decay.
For decay we use formula:

where P=initial value = $3000,
r= rate of decrease =30% = 0.30
t= number of years
A=V(t) = future value
so the required function is 
or 
Now plug t=4 years to get the value of computer after 4 years.


Hence final answer is $720.3.
Answer:
B. 12 slats
Step-by-step explanation:
Divide 42 by 3.5 and you get 12.