Answer:
Tony's deposit was $800.
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
Answer:
i think theres a typo somewhere
Step-by-step explanation:
Answer:
when 
Step-by-step explanation:
Given


Required
Solve
Substitute 3 for x in 

Evaluate all exponents



If i is a zero, -i is also a zero.
The way you get a complex zero is by taking the square root of a negative number. Taking the sqrt (-1) = + and - i