Answer:
y = -1/2
Step-by-step explanation:
5^3 = (5^-2)^y-1
3 = -2(y-1)
3 = -2y + 2
1 = -2y
y = -1/2
Answer: The building is 200ft tall
Explanation: if you Set up a ratio.
10 is to 14 as x is to 280.
Answer:
10 years until the value of the car is 11000 dollars
Step-by-step explanation:
The value of the car after t years is modeled by the following equation:
In which V(0) is the initial value and r is the yearly depreciation ratio, as a decimal.
A new car is purchased for 21100 dollars.
This means that
The value of the car depreciates at 6% per year.
This means that . So
To the nearest year, how long will it be until the value of the car is 11000 dollars?
This is t when
To the nearest year
10 years until the value of the car is 11000 dollars