-- When Riko left the house, Yuto was 5.25 miles ahead of her.
-- From the time she left the house, she gained (0.35 - 0.25) = 0.1 mile on Yuto
every minute ... closing the gap at the rate of 0.1 mile per minute.
-- If she can keep it up, she'll close the gap in (5.25 / 0.1) = 52.5 minutes.
-- Riko is behind her brother when 0 ≤ t < 52.5 minutes .
Let a = car's age in years and v = value of car.
v = 25000(1 - 0.17)^a
v = 25000(0.83)^a
v = 25000(0.83)^a
We need to find a.
Let v = 10,000
10,000 = 25000(0.83)^a
The value of a is about 4.91758.
Round off to the nearest whole number we get 5.
Answer is after more than 4 years but less than 6 and 8.
- 3 -4(2x -3)
Mutiply the bracket by -4
(-4)(2x)= -8x
(-4)(-3)= 12
-3-8x+12
-3+12-8x ( combine like terms )
9-8x or -8x+9
Answers:
9-8x or -8x+9
