80 km
You do 240/60 which is 4 and then times that by 20. By dividing 240 by 60 you are finding how far it goes per minute and then you times that by how many minutes(20) which is 80 km
Any of several graphing calculators are suitable for this. Desmos is a free on-line one that is easy to learn and use.
First of all, don't let "b" confuse you. Know that b = 5/6k = -10, so all you really have to solve for this problem is
.
Before anything else, you have to isolate k. Do this my multiplying both sides by the reciprocal of 5/6.

The 6/5 and 5/6 cancel each other out, so we are left with 
--> 
---> 
So k = -12.
Hope this helped. Good luck.
Answer: 36
Step-by-step explanation: Hello you cam find the answer by multiplying 6 by 6 because if you multiply say 3 by 6 you get 18 and for 4 as well.
I believe 2/10 or 20/ 100