x+3x+3x=21
7x=21
x=3
3, 9, 9=21
the answers are 3, 9, and 9
7. (4,5) 8. (5,-3) hope that helps
Answer:
The exponential function is
.
You will have $1,100.55 in the account after 2 years.
Step-by-step explanation:
Compound interest:
The compound interest formula is given by:

Where A(t) is the amount of money after t years, P is the principal(the initial sum of money), r is the interest rate(as a decimal value), n is the number of times that interest is compounded per year and t is the time in years for which the money is invested or borrowed.
Deposit $1000 in a savings account that pays 4.8% interest compounded monthly.
This means that
. So




This is the exponential function
How much will you have in your account after 2 years?
This is A(2). So

You will have $1,100.55 in the account after 2 years.
Answer:
x not given
therefore no answer for x
$20 of interest. An easy way to think about this problem is first to solve for 10 percent which is easy because you just move the decimal to the left one place, then 5% is half of 10% which is equal to 40 so 40 divided by 2 equals 20