Inequalities
3n + 2 ≤ 20
n = ?
n = 6
-3 + 2x = 11
x = ?
x = 7
8 +14 ÷ 2 x 16
120
(-2)2
4
20n + 50 ≥ 250
n = ?
n = 10
4x + 6 = -10
x = ?
x = -4
7 x 17 +14 ÷ 7
121
(2) 3
8
You have $20 to spend on taxi fare. The ride costs $5, plus $2.50 per kilometer.
Write an inequality to determine the distance in kilometers, d, you can ride for $20.
2.50n + 5 ≤ 20
How many ink cartridges can you buy with $165 if one cartridge costs $11 ?
*just write the number
15
8 ÷ 2 x 17 - 8
60
(12) 2
144
Joe’s cell phone costs him $21 per month plus $3 for every 1GB of data downloaded. Write an inequality to find the number of GBs he can download to stay within his monthly budget if his budget is $30.
21 + 3n ≤ 30
Keith bought a soft drink for 2 dollars and 9 candy bars. He spent a total of 20 dollars. How much did each candy bar cost ?
*answer should be written as $___
$2
18 - 11 +20 ÷ 10
9
(-5) 3
-125
Lucas is offered either 15% or $21 off his total shopping bill. How much would have to be spent to make the 15% option the best one?
*just write the amount
$140
On Monday, 262 students went on a trip to the zoo. All 6 buses were filled and 4 students had to travel in cars. How many students were in each bus ?
*just write the number as answer
43
8 x (12 x 3 - 9 ) - 2
214
(-7) 3
-343