MCQ
If x - 1 > -x + 7 then which is true?
- Ax > 4
- Bx < 4
- Cx > 2
- Dx < 2
Solution:
x - 1 > -x + 7
⇒ 2x > 8 ⇒ x > 4.
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x and b are real numbers. If b > 0 and |x| > b, then:
$\text{x}\in(-\text{b},\infty)$
$\text{x}\in(\infty,-\text{b})$
$\text{x}\in(-\text{b},\text{b})$
$\text{x}\in(-\infty,-\text{b})\cup(\text{b},\infty)$