when graphing the residential values when do you know if a linear model is an appropriate model for your data

When 142 is added to a number the result is 64 more then 3 times the number. option 35 37 39 41

If the ratio of sum of the first m and n terms of an ap is m2 : n2 , show that the ratio of its mth and nth terms is (2m − 1) : (2n − 1).

52 cm radius = diameter = area = circumference = circumfer