5) Data was collected on the sale of ice cream cones and air conditioners. It was found that when ice cream sales were low, air
conditioner sales tended to be low, and that when ice cream sales were high, air conditioner sales tended to be high.
Which statements are correct?
A)
A correlation means that one event causes another event to occur
B)
We can conclude that sales of ice cream cones and air conditioner are
positively correlated
We can't conclude that selling more ice cream cones causes more air
conditioners to be sold.
D)
We can conclude that an increase in ice cream cone sales causes an
increase in air conditioner sales.
E)
It is likely that the increase in the sales of both ice cream cones and air
conditioners are caused by a third factor.
6)

(50 ) mrs. julien’s and mrs. castillejo’s classes are selling cookie dough for a school fundraiser. customers can buy packages of macadamia nut chip cookie dough and packages of triple chocolate cookie dough. mrs. julien’s class sold 25 packages of macadamia nut chip cookie dough and 30 packages of triple chocolate cookie dough for a total of $221.25. mrs. castillejo’s class sold 5 packages of macadamia nut chip cookie dough and 45 packages of triple chocolate cookie dough for a total of $191.25. (a) write the system of equations that model the problem. be sure to explain which equation represents which situation. (b) find the cost of each type of cookie. show your work. (c) explain which method you used to solve the system and why you chose that method.