1 mg = 0.001 grams. therefore 2000 mg = 2 grams
Use substitution
Given both y values, you know that they have to be equal
3x + 3 = x - 1
2x + 3 = -1
2x = -4, divide by 2
x = -2
Now plug x value into any of the equation to find y value
y = 3(-2) + 3
y = -6 + 3, y = -3
Solution: x = -2, y = -3
Answer:
(-1, 4)
Step-by-step explanation:
Use of the coordinate plane.
The vertex of the parabola is 1 to the left and up 4.
Think of the vertex as where the curve starts.
The half life of the value of the computer is = 2 years
The time it will take for the computer to be worth 10% of its purchase price= 3.5 years.
<h3>Calculation of the half-life of computer</h3>
V = value of computer= $2000
t = time after original purchase = 1 year
h = half-life of the value of the computer
The half-life value can be calculated using the given formula;
V(t) = 2000(1/2)^t/h
2000×1 = (2000×1/2)^1/h
2000= 1000^1/h
Make h the subject formula,
h= 2000/1000
h = 2 years
The time it will take for the computer to become 10% of its purchase price is,
10/100×2000
= 20000/100
=$200
If after 1 year the computer= $1516
This means that in a year the price of the computer reduces by approximately $500
Therefore it will take approximately 3.5 years to purchase the computer at 10% it's organic price.
Learn more about percentage here:
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