可汗SAT数学练习：Systems of linear inequalities word problems【2】!为了帮助考生结合有效的练习掌握考点，下面智课网为大家整理了可汗学院SAT数学练习，考生做完可以核对答案。通过不断的练习和总结，充分做好数学考前准备。

7.Prachi needs between 240 and 260 total feet of fence panels. The home improvement store has 24 short (6-foot) fence panels and 28 long (8-foot) fence panels in stock. Which of the following combinations of fence panels could she buy?

A. 6 short fence panels and 26 long fence panels

B. 8 short fence panels and 23 long fence panels

C. 27 short fence panels and 12 long fence panels

D. 30 short fence panels and 10 long fence panels

CORRECT ANSWER: A DIFFICULTY LEVEL: 3

8.Li Qiang is listening to a symphony that has 2 movements. The first movement has 3 beats per measure and the second movement has 4 beats per measure. The symphony has 446 measures. In an attempt to count the beats, Li Qiang counts at least x of the beats in the first movement and exactly b beats in the second movement. Let x be the number of beats in the first movement and b be the number of beats in the second movement. Which of the following inequalities must be true?