Compound interest formula = total = P(1+r/n)^nt
Where P = is the intial amount invested
r is the interest rate, n is the number of compounding periods per year and t is the number of years.
Total = 15000(1+0.065/1)^7
Total = 15000(1.065)^7
Total = $23,309.80
Answer:
lilet is 7 and margie is 21?
Step-by-step explanation:
36-15=21
21÷3=7
21 would be Margies age since its the older age, maybe im wrong i dont know
OK the next step is to multiply 3r -1 by -7r
this gives us -21r^2 + 7r and we write it below -21r^2 + 25r
and subtract
This gives us 18r and we bring down the -6 to give
18r - 6
Finally we divide 18r by -3r to give -6 then add - 6 to the r^2 - 7r on the top
then multiply -3r - 1 by -6 to give 18r - 6
subtraction then leaves nothing.
so the answer is r^2 - 7r - 6
16,404 feet is the answer
I think the last one is the right one
