Absolute Value Equations
Compound Inequalities
Absolute Value Inequalities
Mixed
Challenge
100

|-32|+84/6=?

23

100

The target heart rate during exercise for a 12-year old boy is between 135 and 180 beats per minute inclusive. Write a compound inequality to show the heart rates that are within the target range. Let x be heart rate in beats per minute.

135 ≤ x ≤ 180

100

|3x| > 42

-14>x>14

100

Graph this solution

50 + 20h ≥ 300 

H ≥ 25/2

100

2-2 < |2x|

1/8 < x or x< -1/8

200

|x|+4=33

x=23 or x=-23

200

5x-3 < -18 or -2x-1 > 15

x<-3 OR x<-8

200

|4|2-7+x > 32-4

x > -4

200

For a scholarship competition, Eva had to write an essay.  For the essay Eva had to write Had to be more than 250 words, but it couldn't exceed  500 words. Write an inequality that demonstrates Eva's situation, then graph it.

250 ≥ 500

200

A grandfather, two fathers and two sons went to the movie theater together and everyone bought one movie ticket each. How many tickets did they buy in total

3

300

√169+|-24x|=253

x= 10 or x=-10

300

-5x-8 ≤ -6 or 11x-12 < -100

x ≥ 12 or x ≤ -8

300

|3x-4| > 11+(-9)

x > 2/3 OR x < -2

300

-5|3x-7|+4 = 14

No Solutio 

300

I am not alive, but I grow; I don't have lungs, but I need air; I don't have a mouth, but water kills me. What am I?

Fire

400

43*(|2x|+4)=256

x=0

400

6+7x < 6x-5 or 3x-7 < 5+6x

x < -11 or x > -4

400

−4−3|x|6 ≤ −16

x≥2/3 or x≤-2/3 

400

|b-8|+10>22

b>20 OR b<-4

400

Can you name three consecutive days without using the words Monday, Tuesday, Wednesday, Thursday, Friday, Saturday, or Sunday?

Yesterday, Today, Tomorrow 

500

(-|5!|-4x)/4=244-|-42|

x=-258

500

x+18 ≥ 4(2x+1) or 15(x-1) ≤ 5(3x+1)

All real numbers

500

9|1+8n|-3≥78

n≥1 OR n≤-5/4

500

2|x+42|-20=6x-42*2

x=37

500

The police rounded up Jim, Bud and Sam yesterday, because one of them was suspected of having robbed the local bank. The three suspects made the following statements under intensive questioning.

  • Jim: I’m innocent.
  • Bud: I’m innocent.
  • Sam: Bud is guilty.

If only one of these statements turns out to be true, who robbed the bank?

Jim robbed the bank