Isolate k by dividing both sides by 8
8k=4/9
k=4/72
Reduce if possible
4/72 -> 1/18
F(x)=IxI-5
when you shift it up, add the units to the end of y=IxI
when you shift it down, subtract the units to the end of y=IxI
Answer:
So Average Price of horse is $360
Step-by-step explanation:
Given:
25 horses sold in January for $ 2500
25 horses sold in February for $10500
TO find:
Average price of horse = ?
Solution:
Average price is usually found out by adding all the values and dividing by its total no of values
Now in our case
Total Horse = 25 + 25
= 50
Total Money = $7500 + $10500
= $18000
Average Price 
Average Price 
=$360
So Average Price of horse is $360
Answer:
<h2>B. The amount of fuel used was lowest at speeds around 60km/h.</h2>
Step-by-step explanation:
The decreasing part is from (20,13) to (60,6), which gives an average rate of

Then, we have an increasing part from (60,6) to (120,10), which gives an average rate of

Basically, at 60 km/h the fuel used was 6 liters per 100 kilometers. Notice that the other velocities make the car to use more liters per kilometers.
Therefore, the amount of fuel used was lowest at speeds around 60 km/h.