6 more than 2 times a number m

A.2m-6
B.6(2m)
C.8+m
D.6+2m​

This is a map of the mars exploration rover opportunity predicted landing site on mars. the scale is 1cm : 9.4km. what are the approximate measures of the actual length and width of the ellipse? i mostly need to know how to set it up : )

Which shows a reasonable estimation for 124% of 42 using the distributive property?

Which function represents the sequence? f(n)=n+3 f(n)=7n−4 f(n)=3n+7 f(n)=n+7