The ratio between the distances of two cities from a third city is 7:8. If the total distance is 150 km, what are the distances of the two cities from the third one?

70km and 80km

The option you chose is correct

step-by-step explanation:

to find if any function is an inverse of the other, put the first equation in as x in the next one. then simplify and solve. if at the end you get the statement y = x, then it is an inverse. if you get anything else, it is not.

this may not be at all, but i use the same website you're using for school, and if i'm stuck doing one of these i try to look for it on the section.