Answer:
The value of Lucys house at the start of 2017 is 231525.
Step-by-step explanation:
It is given that the initial value of Lucys house is 200,000. The at the start of 2017.
The exponential function is defined as

Where, P₀ is initial value, r is growth rate, t is time in years.
The value of house is defined by the function

Where, t is number of years after 2014.

The difference between 2017 and 2014 is 3 years.

Therefore the value of Lucys house at the start of 2017 is 231525.
Answer:
1.2 kilometers
Step-by-step explanation:
0.3x4=1.2 kilometers
check the picture below.
so, when we have a line from a 90° angle running perpendicular to the opposite side, like in this case, we end up with three similar triangles, a large one containing the other two, a medium and a small one.
now, using the sides proportions as you see there, of the small and large one, we get that much.
The formula is
V (t)=V0 (1-r)^t
V (t)?
V0 1000
R 0.05
T 5 years
V (5)=1,000×(1−0.05)^(5)=773.78