Suppose that in the year 2010, the cost of a compact car averaged $14200 and that in 2013, the cost averaged $15700. Assuming that the relationship between year xx and cost yy is linear, develop a formula for predicting the average cost of a compact car in the future. Let the variable xx be the years since 2010. Be sure to use the lower case variables xx and yy. . What do you predict the average cost of a compact car will be in the year 2015? Note: You can earn partial credit on this problem.

Which part of a 2-column proof is the hypothesis of the conjecture? a) given b) reasons c) prove d) statements ! i think it's b but i'm not quite

Plzzz answer both questions and i will give you 100 points

1. why is a frequency distribution useful? it allows researchers to see the "shape" of the data. it tells researchers how often the mean occurs in a set of data. it can visually identify the mean. it ignores outliers. 2. the is defined by its mean and standard deviation alone. normal distribution frequency distribution median distribution marginal distribution 3. approximately % of the data in a given sample falls within three standard deviations of the mean if it is normally distributed. 95 68 34 99 4. a data set is said to be if the mean of the data is greater than the median of the data. normally distributed frequency distributed right-skewed left-skewed