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A caterer charges $120 to cater a party for 15 people and $200 for 25 people. Assume that the cost, y, is a linear function of the number of x people. Write an equation in slope-intercept form for this function. What does the slope represent? How much would a party for 40 people cost? y = 15x + 120 y = 8x + 120 y = 8x y = 10x + 80 Paul opens a savings account with $350. He saves$150 per month. Write a linear model that representsthe total amount of money Paul deposits into his account after x months. After how many months willPaul have more than $2,000? y = 150x + 350; 12 months y = 150x + 350; 3 months y = -150x + 350; 8 months 350x + 150y = 2000; 11 months Which equation shows the rule for this graph? y = 3/4x - 7 y = -4/3x + 7 y = 4/3x + 0/7 y = -3/4x + 7 A B C D When is Rodney's speed decreasing the most rapidly? Between B and C Between D and E Between E and F Between F and G Match each type of correlation to a scenario. A. No correlation B. Positive C. Negative The number of hours a person has driven and the number of miles driven. The age of a car and the value of the car. The age of a house and the number of people living in the house. The scatter plot shows the number of CDs (in millions) that were sold from 1999 to 2005. If the trend continued, about how many CDs were sold in 2006? 450 650 750 There is no way to know Write the equation for the line of best fit shown in the scatter plot. y = -1/2x + 1 y = 1x - 4 y = 2/3x + 2 y = 2/3x - 4 Which of the three lines shown is the line of best fit? L1 L2 L3 Which pair of variables would NOT fit the scatter plot. Age of a tadpole and length of their tail A person's height and their Math grade The amount of clothes purchased and the amount of money left in a person's wallet Average temperature and the number of coats sold If a girl is chosen from the set of girls at random, what is the probability that she watched the Super Bowl? 40% 20% 38% 8% Complete the two-way frequency table. Write the equation of the line that passes through the points (2, 13) and (-1, -2). y = 1/5x -2 y = 11/3x + 13 y = 5x + 3 y = -5x -8 |