Data:
Initial price: $67.000
Price decrease: .30 each year t
The general form of a model of exponential decrease is:
Where P0 is the initial price, r is the rate of decrease and t the number of periods.
Then, for the given situation you get the next equation:
Then, the answer is the option D.
Answer:
The elapsed time is 7hrs and 1 minute.
Answer:
8 grams
Step-by-step explanation:
The balance is in equilibrium, so the weights of the two sides are equal.
Let the weight of a square be s.
Left side: 2s + 4
Right side: s + 3(4) = s + 12
The weights are equal, so we set the two expressions equal.
2s + 4 = s + 12
s = 8
Answer: The weight of a square is 8 grams.
Question 2: The first step was the combine the like terms; in this example he is subtracting the 3x on both sides of the =.
Given:
The equation is
To find:
The number of roots and discriminant of the given equation.
Solution:
We have,
The highest degree of given equation is 2. So, the number of roots is also 2.
It can be written as
Here, 
.
Discriminant of the given equation is
Since discriminant is 
, which is greater than 0, therefore, the given equation has two distinct real roots.
Answer:
200 tax 33
Step-by-step explanation:
