A map is made of a park. The scale from the park to the map is 30 mi to 6 cm. The length of Great Oaks Trail is 3 cm on this map. What is the actual length of the Great Oaks Trail?

Pls! does anybody know a shortcut for answering these types of questions in the future?

The graph and table shows the relationship between y, the number of words jean has typed for her essay and x, the number of minutes she has been typing on the computer. according to the line of best fit, about how many words will jean have typed when she completes 60 minutes of typing? 2,500 2,750 3,000 3,250

X^2/100+y^2/25=1 the length of the major axis is: a)5 b)10 c)20