Answer:
$1445.11
Step-by-step explanation:
The formula to use would be:

Where
F is the future amount (what we want to find)
P is the present (principal) amount (this is 400)
r is the rate of interest, monthly (1.8% or 0.018)
t is the time in months (6 years = 6 * 12 = 72)
Now substituting, we get:

After 6 years, the CD will be worth $1445.11
Answer:
6/10
Step-by-step explanation:
all can be reduced to 2/5, except 6/10:
2/5
8/20=2/5 (divide out 4)
12/30=2/5 (divide out 6)
but not
6/10 = 3/5!
Answer:
$6
Step-by-step explanation:
0.15 multiplied by 40