Answer:
The principal for the account is $375.
Step-by-step explanation:
This is a simple interest problem.
The simple interest formula is given by:

In which E is the amount of interest earned, P is the principal(the initial amount of money), I is the interest rate(yearly, as a decimal) and t is the time.
The interest earned after 1 year is $12 .If the interest rate is 3.2% for account (A).
This means, respectively, that 
We want to find P.




The principal for the account is $375.
Answer:
Step-by-step explanation:
The answer is 50
The answer is 12. All you had to do was divide.
So, 30 divided by 2.5 equals 12.
I hope this helps!
Answer:
[D] -552.5 feet
Step-by-step explanation:
You have to multiply 5 by -110.5
Hence, Answer = -552.5 feet
[RevyBreeze]
Answer:
dC = 2.44
Relative error = 19%
Step-by-step explanation:

Δv = 3 ; ΔT = 1 , v = 23, T = 8
Use differential Calculus


Relative Error
dC / C @(T = 8, v=23) * 100 = 19 %