Question: for all numbers a and b , the operationis defined by ab = ( a + 2 ) ( b – 3 ) . if 3 x = – 25 , then x =
A) – 15
B) – 2
C) - 3
D) 6
E) 15
Correct answer: B
Grade: 7 | Topic: Number System | Difficulty: Medium | Standard: 7.NS.A.2