Questions 17 19 refer to the following information box width w 17 box height h total height Note Figure not drawn to scale When designing stacked displays of different types of crackers for sale a manufacturer can use the box size formula h 3w 30 where h is the height of each box of crackers in inches and w is the width of each box of crackers in inches For any given stacked display the height and width of each box displayed is the same The height of each level in the stacked display is equal to the height of the boxes of crackers in the display For example there are 2 levels in the figure above each with a height of h The total height of the stacked display is the sum of each level s height as shown in the figure Some cracker manufacturing companies require that for wheat crackers the box height must be at least 12 inches and the box width must be at least 3 inches According to the box size formula which of the following inequalities represents the set of all possible values for the box width that meets this size quirement 06 w 12 3 w 6 18 A manufacturer wants to use the box size formula to design a stacked display that has a total height of 7 feet holds boxes with a height between 8 and 10 inches and contains an even number of levels With the manufacturer s constraints which of the following must be the width in inches of the box 1 foot 12 inches A 6 8 B 7 2 8 4 19 C D 10 Which of the following expresses the box width terms of the box height A w 30 30 h 30 30 h B W w C w 30 h D w 30 30 h