Easy 2-step inequalities
3x + 4 > 16
x > 4
I want to get 5 candy bars, each for $4. I have $25. Do I have enough?
Set up the inequality and say yes or no
4x < 25
x = 5
yes
5x + 4 < 10
divided by 5 first
18x + 3 < 111
x < 6
I want to get 14 pillows, each for $8. I have $200. Do I have enough?
Set up the inequality and say yes or no
8x < 200
x = 14
yes
14 + 5x < 7
Flipped the sign when I shouldn't have
13 + 12x < 157
x< 12
I want to get 5 blankets for my bed, each for $17. I have to buy my sheets that are $30. I have $100. Do I have enough?
Set up the inequality and say yes or no
17x + 30 < 100
x = 5
No
3x + 9 < 10 - x
subtracted x when you should have added
25x + 66 > 99
x > 33/25
I want to get 125 pictures for my picture wall, each for $0.50. I have to buy the string for the wall for $18. I have $80. Do I have enough?
Set up the inequality and say yes or no
0.5x + 18 < 80
x = 125
No
2x + 15 > 45 + 18x
didn't flip sign
100x + 500 < 1000
x < 5
I want to get 23 watermelons, each for $6. I have to buy the plates too for $16. I have $155. Do I have enough for a pack of gum for $1?
Set up the inequality and say yes or no
6x + 16 < 155
x = 23
154 < 155, $1 left over, so Yes!
(3/4)x + 75 < 50
flipped sign and didn't include negative