Question

Which of these expressions resolves to a finite set of solutions for x?

a.)|2 + x| = 7

b.)2 ≤ x ≤ 7

c.)|2 + x| > 7

d.)2 < x < 7

Answer 1

Please find the solutions for (a).

Answer 2

huh ?

Answer 3

please help

Answer 4

Which values for x make the equation in a.) true?

Answer 5

2 & 7

Answer 6

No, that is not true. I'll give you a definition: \[|a| = \begin{cases}a\quad \text{if}\;a \geq 0\\-a\quad\text{if}\;a < 0\end{cases}\]

Answer 7

ok

Answer 8

I think the answer is A

Answer 9

Because x can only be 5 or -9 if |x+2|=7