14 kg because 2/5 equals 0.4 and 0.1 equals about 1 kg so I add 0.6 which equals 6 kg so i add 8 kg to 6 kg and get 14 kg
15 times x plus 7
I hope i helped!
Answer: 
Step-by-step explanation:
By definition, the slope of the line is described as "Rate of change".
You need to use the following formula to calcualte the slope of the line;

In this case you know that the line passes through these two points: (8, -10) and (-6, 14).
Then, you can say that:

Knowing these values, you can substitute them into the formula for calculate the slope of a line:

Finally, you must evaluate in order to find the slope of this line. You get that this is:

Answer:
b) around 6 years
c) around 2,500
Step-by-step explanation: