Answer:
He is 3 years old.
Step-by-step explanation:
3 times 9 is 27. She is 9 times older than her 3 year old son.
Next year he will be 4 and she will be 28. 4 times 7 is 28. She will be 7 times older than her son.
Answer:
x = 1
Step-by-step explanation:
Given
1000x = 1000 ( divide both sides by 1000 )
x =
= 1
Answer:
-2, 4, 36
Step-by-step explanation:
the equation should be:
(x+2)^2 + (y-4)^2 = 36
since the center is (-2, 3) and the radius is 6 units.
always remember:
C(h,k) = (x-h)^2 + (y-k)^2 = (radius)^2
Answer:
$1080
Step-by-step explanation:

convert % to decimal by multiplying 3.2%x100=0.032
then multiply by initial amount 3000x0.032
then multiply by 2 because it's compounding semiannual
then multiply by 3 because it's over a 3 yr period
do the same for the quarterly compound but multiply by 4 because it's quarterly

over a 3 yr period the quarterly compounded amount will earn:

$504 more than the account compounded semiannual