Answer:
Step-by-step explanation:
D.works many year for a nation
65 is the answer. Solve the first equation and then plug in.
Answer:

Step-by-step explanation:
we know that
The simple interest formula is equal to
where
I is the Final Interest Value
P is the Principal amount of money to be invested
r is the rate of interest
t is Number of Time Periods
in this problem we have
substitute in the formula above
solve for r

convert to percentage (multiply by 100)

Answer:
4 + 3x
Step-by-step explanation:
Let the number = x
Product of three and a number = 3*x = 3x
Sum of four and 3x = 4 + 3x
Answer:
36.72
Step-by-step explanation:
if I'm wrong could you please tell me? good luck and if you have any other question you can ask me bye.