SAT数学练习题六(附答案)
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1. If 3x – 5 = 16, then x =
A. –7
B. 11/3
C. 4
D. 7
E. 18
2. If (x+4)/x =9/7, what is the value of x?
A. 3.5
B. 7
C. 14
D. 21
E. 35
3. At a flooring center, you can purchase carpet in one of five styles and in one of 10 colors. How many different style-color combinations are possible at this flooring center?
A. 15
B. 36
C. 40
D. 45
E. 50
4. In the xy-plane, a circle has its center at point C (0, 0) and contains the point P (–3, 4). Under the translation that moves point C to (–2, 3), where will point P be located after this translation?
A. (–1, 1)
B. (1, –1)
C. (–3, 2)
D. (–4, 5)
E. (–5, 7)
5. If f (x)=(2- x)2^ /x+3/5 , what is the value of f(5)?
A. 0
B. 1.2
C. 2.4
D. 3.6
E. 4
6. An employee had to take a pay cut of 20%. A while later, she received a pay raise of 25%. Her new salary after the pay raise was what percent of her salary before the pay cut?
A. 45%
B. 55%
C. 80%
D. 95%
E. 100%
Answers:1. D 2. C 3. E 4. E 5. C 6. E
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