Answer: Your answer is: -17/5
Step-by-step explanation: You just have to convert the mixed number into an improper fraction.
Answer = $44
1. Divide $140 by 5/7. It will give us how much Kelvin had originally, which is $196
(I got 5/7 by doing 7/7 - 2/7)
2. Find 2/7 of 196 by multiplying them. This is 56....meaning that Kelvin gave James $56
3. Subtract 100 - 56 to find how much James had before this, which is $44.
Answer:
The average rate of change is 4
Step-by-step explanation:
To find the values of y when x = 0 and when x = 2, we can graph the equation using a graphing calculator.
Looking at the graph, we can see that when x = 0 y = 5 and when x = 2 y = 13
Now that we have two points (0,5) and (2,13) we can find the rate of change
To find the rate of change we use this equation: 
Let's input the values from our two points

Simplify:
= 4
x = -2
-2 + 2y = -12
add 2 to both sides: 2y = -10
divide by 2 on both sides: y = -5
when x = -2, y = -5
The kite is 105 feet in the air