Hunter bought a book at the book fair for $6. He has $10 left. How much money did he start with?
m = $16
100
The dependent varible changes because of the independent variable.
True or False
True
100
x + 2 = y
Does the order pair, (1,3), make the equation true?
Yes
200
x - 7 = 10
x=17
200
2x > 10
x > 5
200
Kayla is babysitting for her neighbor. She charges $12 per hour plus an $8 flat rate. How much would she earn in 3 hours?
$44
200
The independent variable changes if the dependent variable changes.
True or false?
False
200
x/4 < 12
Does x=20 make the inequality true?
Yes.
20/4 <12
5 < 12
300
x * 3 = 30
x = 10
300
x ≥ 6
What would the graph look like?
Closed dot on 6; shaded to the right.
300
Alyssa is going shopping and can spend at most $25. If she spends $10, how much does she have left to spend.
Write an inequality.
10 + m ≤ 25
300
Riya is making cookies. The number of cookies she has depends on the amount of flour she has. Which is the independent variable?
Flour
300
Write the equation in word:
Some number minus 12 equals 15.
x - 12 = 15
400
x/3 = 15
x = 45
400
x - 3 < 4
Simplify, then graph.
x < 7
Open dot on the 7; shaded to the left.
400
A cruise ship can travel 50 miles per hour. How many hours would it take to travel 400 miles?
Write an equation and solve.
50h = 400
h = 8
400
Ethan is growing bean plants for science. The height of the plant depends on the amount of water it gets. What is the dependent varible?
Height
400
What is the solution set for
m ≥ 15
All numbers greater than 15 and 15
500
x + 2 = 16 - x
If x = 7, is this equation true?
Yes.
500
Name the four inequality symbols.
> greater than
< less than
≥ greater than or equal to
≤ less than or equal to
500
A cat has 3 kittens. Each kitten weighs more than 2 ounces.
Write an inequality to show the weight of a kitten.
k > 2
500
The school is going to have a picnic. The amount of food they buy depends on the number of people who come.
What is the independent variable?
People who come.
500
Ms. Valentine needs to buy candy canes for her students. If there are at least 20 students in each of her five classes, how many does she need to buy?
Write your answer as an inequality.