Brandon and his band want to record a cd of their music. the recording studio charges $750.00 for the session and $3 for each cd. the studio requires that bands spend a minimum amount of $1200. a) write an equation for the cost of the cd’s in relation to the number of cd’s. b) write and solve an equation or inequality that can be used to determine the minimum number of cd’s they would need to buy if they only want to spend the minimum amount. c) the band decides to buy 200 cd’s, how much money will they be spending? they are planning on selling them to recoup their expenses at the recording studio as well as make a little profit. what is a reasonable amount of money they should charge for each cd? at that price, how many cd’s will they have to sell to recoup their expenses? d) if the band sells all the cd’s at that price, what is the total profit that the band will make (after expenses)? your

Part one: measurements 1. measure your own height and arm span (from finger-tip to finger-tip) in inches. you will likely need some from a parent, guardian, or sibling to get accurate measurements. record your measurements on the "data record" document. use the "data record" to you complete part two of this project. name relationship to student x height in inches y arm span in inches archie dad 72 72 ginelle mom 65 66 sarah sister 64 65 meleah sister 66 3/4 67 rachel sister 53 1/2 53 emily auntie 66 1/2 66 hannah myself 66 1/2 69 part two: representation of data with plots 1. using graphing software of your choice, create a scatter plot of your data. predict the line of best fit, and sketch it on your graph. part three: the line of best fit include your scatter plot and the answers to the following questions in your word processing document 1. 1. which variable did you plot on the x-axis, and which variable did you plot on the y-axis? explain why you assigned the variables in that way. 2. write the equation of the line of best fit using the slope-intercept formula $y = mx + b$. show all your work, including the points used to determine the slope and how the equation was determined. 3. what does the slope of the line represent within the context of your graph? what does the y-intercept represent? 5. use the line of best fit to you to describe the data correlation.

Needmax recorded the heights of 500 male humans. he found that the heights were normally distributed around a mean of 177 centimeters. which statements about max’s data must be true? a) the median of max’s data is 250 b) more than half of the data points max recorded were 177 centimeters. c) a data point chosen at random is as likely to be above the mean as it is to be below the mean. d) every height within three standard deviations of the mean is equally likely to be chosen if a data point is selected at random.

Erin bought christmas cards for $2 each to send to her family and friends. which variable is the dependent variable?