I think it’s 0.4285 or 42/85
Answer:
<em>Correct choice: b. $1221.00</em>
Step-by-step explanation:
<u>Compound Interest</u>
It occurs when the interest is reinvested on each compounding period. When it happens interest in the next period is then earned on the principal sum plus previously accumulated interest.
The formula is:

Where:
A = final amount
P = initial principal balance
r = interest rate
n = number of times interest applied per time period
t = number of time periods elapsed
The initial deposit on a savings account is P = $1000. The account provides an annual rate of r = 4% = 0.04 compounded monthly. The value of n is 12 since there are 12 months in a year. The money is left in the account for t=5 years. Substituting the values:


A = $1221
Correct choice: b. $1221.00
Answer:
The decibel range is 
Step-by-step explanation:
Let
d -----> the decibel level of the music
we know that
The absolute value of the difference of the decibel level of the music and its average, must be less than or equal to 28 decibels
so
The absolute value that represent this problem is

Solve the absolute value
<em>First solution (positive)</em>

Adds 110 both sides


<em>Second solution (negative)</em>

Multiply by -1 both sides

Adds 110 both sides


therefore
The decibel range is

240 feet.
Why?
200-80= 120
120+120=240
Hope this helps!
5t+3=2t+15
combine the t's by adding 2t to 5t
7t+3=15
subtract 15 by 3
7t=12
divide by 7
t is about 1.7