2014.6.24SSAT数学真题第一练

　　1. Vivian wants to plant a vegetable garden that contains only tomatoes and cucumbers. However, she has a limited amount of space for the garden, and she can only afford to buy a specific number of each vegetable. Vivian has enough space to plant a total of 40 vegetables, and she has a total of $80 to purchase the vegetables. Tomatoes cost $1 per plant and cucumbers cost $3 per plant. Let T represent the number of tomatoes and let C represent the number of cucumbers Vivian will plant in her garden.Which system of linear equations can be used to solve for the number of tomatoes and cucumbers Vivian will plant in her garden?

　　a. T + C = 40 and T + 3C = 80

　　b. T + 3C = 40 and T + C = 80

　　c. T + C = 80 and T + 3C = 40

　　d. 3T + C = 80 and T + C = 40

　　2. {(5,8), (3,4), (-1,-4), (-3, -8), (-5,-12)}What is the range of the coordinate pairs?

　　a. {5, 8, -5, -12}

　　b. {-1, -4}

　　c. {-5, -3, -1, 3, 5}

　　d. {-12, -8, -4, 4, 8}

　　SSAT数学真题答案：1. A 2. D