1. What values of x satisfy the equation |x| -5 = 20 ?
a. {x|x =25 or x= -25}
b. {x|x = 4 or x= -4}
c. {x|x = 25 or x= 15}
d. {x|x = -15 or x= -5}
2. What are the values of m that will make |m| =27 true?
a. 2 and 7
b. 26 and -27
c. 27 and -27
d. none
3. Determine the solution set of the inequality -2k + 7 < -5.
a. {k | k <5}
b. { k | k > 6
c. {k | k< 6}
d. {k | k < 3}
4. What id the solution set of x +3 < 12?
a. { x | x < 9}
b. { x | x > 9}
c. { x | x < 7}
d. { x | x < 8}
a. {x|x =25 or x= -25}
b. {x|x = 4 or x= -4}
c. {x|x = 25 or x= 15}
d. {x|x = -15 or x= -5}
2. What are the values of m that will make |m| =27 true?
a. 2 and 7
b. 26 and -27
c. 27 and -27
d. none
3. Determine the solution set of the inequality -2k + 7 < -5.
a. {k | k <5}
b. { k | k > 6
c. {k | k< 6}
d. {k | k < 3}
4. What id the solution set of x +3 < 12?
a. { x | x < 9}
b. { x | x > 9}
c. { x | x < 7}
d. { x | x < 8}
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Answer:
1.A
2.C
3.B
4.A
Correct me if I'm wrong^^
1. A
2. C
3. B
4. A
|x|=20+5
|x|=25
x=25
x= -25
x = -25, x=25
¹. ²
m=27
m= -27
m = -27, m = 27
¹. ²
-2k<-5-7
-2k<-12
k<6
x<12-3
x<9