Answer: a) , where 'A' is the value of car after 't' years.
b) $12446.784
Step-by-step explanation:
Given: A new car that sells for $21,000 depreciates (decreases in value) 16% each year.
Then a function that models the value of the car will be
, where 'P' is the selling price of car, 'r' is the rate of depreciation in decimal, 't' is the time in years and 'A' is the value of car after 't' years.
Thus after substituting given value, the function becomes
To find the value after 3 years, substitute t=3 in the above function.
Hence the value of car after 3 years=$12446.784
This is the expression simplified:
Answer:
13
Step-by-step explanation:
7 cm +1 cm +2cm +2cm :12cm
- Average Rate of Change/Slope Formula:
So using points (6,71) and (2,y), and the slope of 15, plug them into the slope formula as such:
From here we can solve for y. Firstly, solve the subtraction:
Next, multiply both sides by 4:
Next, subtact both sides by 71:
Lastly, multiply both sides by -1, and <u>your final answer will be 
, or A.</u>
