Answer the following questions using what you've learned from this unit. write your
answers in the space provided. be sure to show all work.
1. a department store kept records of how many fans were sold each day and the high
temperature for that day. the results are shown in the scatterplot. answer the
questions about the scatterplot.
number of fans sold
outside temperature
a. what is the explanatory variable (independent variable)? (1 point)
b. what is the response variable (dependent variable)? (1 point)
c. circle the best range for the correlation coefficient. (1 point)

mr. flanders’ class sold 47 doughnuts and   mr. rodriquez’s class sold 38 cartons of milk

step-by-step explanation:

let x be the number of doughnuts sold by mr. flanders’ class and y be the number of cartons sold by mr. rodriquez’s class.

1. together, the classes sold 85 items, then

x+y=85.

2. both classes earn earned $104.49 for their school. if doughnuts were sold for $1.35 each, then x doughnuts costed $1.35x. if cartons of milk were sold for $1.08 each, then y cartons costed $1.08y. hence,

1.35x+1.08y=104.49.

3. solve the system of two equations:

225x²+4=0

225x²=0-4

225x²=-4

x²=-4/225

x=±√-4/225

i think the answer is seven, for if i'm being useless °ω°

step-by-step explanation: