Answer:
$448
Step-by-step explanation:
We can use the simple interest formula for this:
<em>P = initial balance</em>
<em>r = annual interest rate</em>
<em>t = time</em>
<em />
First, change 4% into its decimal form:
4% -> 
-> 0.04
Now, lets plug in the values:
The total amount in the account after 3 years will be $448
Answer:
The answer is A. 105
Step-by-step explanation:
it's more tilted so it can't be a lower number, the only option is 105
Answer:
c
Step-by-step explanation: use a calculator
What you want to do is take 9 and multiply 9 by itself 5 times as shown (9*9*9*9*9) and you get 59049 then you take that number and divide it by 2 so 59049/2 is 29524.5
First make note of the domain of the left hand side.
• √(x + 1) is defined for x + 1 ≥ 0, or x ≥ -1.
• √(2 + √(x + 1)) is defined for 2 + √(x + 1) ≥ 0. If x ≥ -1, then this condition is satisfied.
• √(7 + √(2 + √(x + 1))) is defined for 7 + √(2 + √(x + 1)) ≥ 0. This condition is also satisified automatically if x ≥ -1.
Now solve the equation. Taking the square of both sides of
√(7 + √(2 + √(x + 1))) = 3
yields
7 + √(2 + √(x + 1)) = 3² = 9
√(2 + √(x + 1)) = 2
Squaring both sides again gives
2 + √(x + 1) = 2² = 4
√(x + 1) = 2
And once more,
x + 1 = 2² = 4 ⇒ x = 3
