Solve the following inequality and plot on number line.
x+4>18
x>14
100
Isis charges $10 to mow lawns. She earned $50 last week mowing lawns. What is x, the number of lawns she mowed last week?
Write an algebraic equation to represent this situation and then solve that algebraic equation.
10x=50
x=$5
100
-5+-4=
-9
100
Solve 4x + 2.25, if x = 11.5
48.25
200
4x=16
x=4
200
Solve the inequality and plot on a number line.
9 ≤ x - 3.
x>12
200
A dog weighs 25 pounds and his owner weights x pounds. Write an equation to represent the total weight of the dog and the owner.
25+x=t
200
-25-7=
-32
200
Simplify each algebraic expression. Clearly indicate your final answers.
7x+2+3x+4
10x+6
300
x – 15.5 = 34.4
x=49.9
300
Solve the inequality and plot on a number line.
7x < -21
x<-3
300
Each candy bar costs $1.85. Jenny bought x candy bars. Write an algebraic equation to represent t, the total cost of the candy bars.
$1.85x=t
300
-24/6=
-4
300
-31+17=
-14
400
3 + x = -20
x=-23
400
Which inequality is true when x = 5?
F. 10x<40 H. 10x ≤ 40
G. -10x ≥ 40 J. -10X > 40
H
400
Netflix sells movie tickets for a flat fee of $9.50 per ticket.
(a) If 8 people buy movie tickets from Netflix, what will be the total cost?
(b) Write an equation that models this situation. Use “x” to represent the number of people and “y” to represent the total cost.
a. $76
b. $9.5x=y
400
-28/7=
-4
400
Reyvan volunteers at an animal shelter. There are 2 cats for every 5 dogs at the shelter. If the animal shelter has 30 dogs, how many cats will there be?
12
500
d/3.5=7
d=24.5
500
Mr. Lacy uses 56 markers a day. He has used 33 markers so far today. Which inequality can be used to determine how many more markers, m, Mr. Lacy will use today?
A. 33 – m < 56 B. 33 – m ≤ 56
C. 33 + m > 56 D. 33 + m ≥ 56
D
500
Walmart sells Takis for a flat fee of $2.27 per bag.
(a) If 12 people buy Takis from Walmart, what will be the total cost?
(b) Write an equation that models this situation. Use “x” to represent the number of people and “y” to represent the total cost.
a. $27.24
b. $2.27x=y
500
-36-8=
-44
500
Armando has a collection of 40 coins. Of the 40 coins, 18 are nickels. What percent of the coins are nickels?