DCMAM
Proportions
Word Problems
Inequalities
Relations and Functions
100
x+7=10
x=3
100
x/3 = 16/12
x=4
100
What is 20% of 200?
(20%)/100=x/200
x=40
100
Graph the following
x>3
Open circle on 3, arrow pointing to the right.
100
Is this a function?
No.
200
2x-5+9
x=7
200
9/5 = x/45
x=81
200
5 movie tickets cost $45. How much would 8 tickets cost?
5/45=8/x
x=$72
200
Solve the following inequality
2x+11<=31
x<=10
200
Is this a function?
Yes
300
3x+4-2x=10
x=6
300
x/1.2=4.62/0.88
x=6.3
300
A baker uses 6 cups of flour to bake 3 loaves of bread. How much flour is needed for 10 loaves?
6/3=x/10
x=20 c u p s
300
Solve the following
-20x>40
x<-2
300
What is the domain of the graph?
-3<x<3
(-3,3)
400
5(3x+1)=2x(4+1)
5(3x+1)=2x(4+1)
15x+5=2x(5)
15x+5=10x
5=-5x
x=-1
400
10/(2k-2)=5/9
k=10
400
You tip Mr. Cortez $24 at a restaurant (thanks!) You gave him a 25% tip of the bill. How much was the whole bill?
(25%)/100=24/x
x=$96
400
Solve the following inequality
3(2x+10)+2x>70
x>5
400
What is the range of the graph?
4<y<=20
(4,20]
500
2(3x+4)−x=5x+10-2
6x+8-x=5x+10-2
5x+8=5x+8
8=8
Infinitely many solutions
500
(2x-5)/16=5/7
What is 8.21
500
Sarah earns $10 per hour babysitting, and she has already saved $50. She needs at least $200 to buy a new phone. How many hours does she need to babysit to meet her goal?
10x+50>=200
x>=15 hr
500
Solve.
-2(2x+5)<=5x-10
x>=0
500
What is the domain of this graph?
x>=-2
[-2,oo)