Answer:
(-5,0)
Step-by-step explanation:
Answer:
Option C is correct.
Exact solution of 
is, 
Step-by-step explanation:
Given the equation:
Using logarithmic rules:
⇒ 
Given:
Taking logarithmic both sides:
By logarithmic rules;
Using distributive property i.e 
Subtract 
from both sides we get;
Simplify:
or
Divide both sides by 
we get;
Therefore, the exact solution of the given equation is
First we define variables:
x = first card original value
y = second card original value
z = third card original value
We write the system of equations:
Andrew bought 3 baseball cards for $ 240:
x + y + z = 240
the first card (at its original value) along with the second card (at its original price) and got $ 320:
2x + y = 320
the first card (at its original value) card along with the third card (at its original price) would have only got him $ 280:
2x + z = 280
Solving the system we have:
x = 120
y = 80
z = 40
Answer:
The original prices for each of the 3 baseball cards is:
(120, 80, 40)
100/200 that is the question
