Words....Equations
The Elk Grove Bowling Alley offers a special. Each game costs $2.50, and shoe rental $2. You spend $14.50 total.
What does the variable x represent?
The number of games bowled.
Solving Equations
Solve for x.
x + 3 = 7
What is:
x = 4
Solving Inequalities
Solve for c.
c - 11 > 22
What is:
c > 33
We use opposite operations to solve equations and inequalities?
True
For "less than" and "greater than," is there an open circle or closed circle?
open circle
The bill for the repair of a computer was $179. The cost for parts was $44, and the labor charge was $45 per hour. How many hours did it take to repair the computer?
Write the equation and solve.
44 + 45x = 179
3 hours
Solving Equations
Solve for x.
2x = 8
What is:
x = 4
Solve for x?
2x -1< 3
x<2
Addition is the inverse of division?
False
Hector Garcia is having a Carnival. Admission into the carnival is $5, and each game inside the carnival cost $2.00. What inequality represents the possible number of games "g" that can be played with $20?
5 + 2x ≤ 20
Long’s Coffee Shop sells a refill mug for $8.95. Each refill costs $1.50. Last month, Jalissa spent $26.95 on a mug and refills. How many refills did she buy?
Write the equation and solve.
8.95 + 1.50x = 26.95
12 refills
Solving Equations
Solve for x.
5x -3= 22
What is:
x = 5
Write an inequality
S is at most 55
s <= 55
We use a closed circle to represent the inequalities < and > ?
False
Jays father gave him 300 pokemon cards. Every week, Jay bought 20 pokemon cards to add to his collection. Write an inequality to find "w" the number of weeks it will take Jay to have more than 1,000 pokemon cards in his colection.
300 + 20w > 1,000
You and three friends go to the town carnival. You have a coupon for $20 off that will save your group money! If the total bill to get into the carnival was $100, how much does one regular price ticket cost?
Write the equation and solve.
4x - 20 = 100
$30 for each ticket.
Solve for v.
v/2 + 14 = 30
v = 32
Solve for x?
-2(x-1)+4<8
x>-1
Inequalities only have one solution, just like equations.
False. Inequalities have infinitely many solutions.
A inequality is shown: 5x - 2 ≥ 8 What is the solution on a number line?
Start at 2 on number line Closed circle Arrow going Right ------->
. The sum of the measures of the angles of all triangles is 180˚. If one angle of the triangle measures 45˚, and the other two angles are equal, what is the measure of each of the other two angles?
Write the equation and solve.
45 + 2x = 180
67.5 degrees each
Solve for x?
8x-4 = 3(x+2)
x=2
Solve for x?
-4x +2< 3x+16
What is:
x>-2
Given c + 4 > 14
We use the opposite operation of subtraction to solve the inequality.
TRUE
Mark has $75 in hes savings account. he earns $25 for each lawn she mows. Find x, the least number of lawns he will need to mow in order to have a total of at least $1,500 in her savings account. Write the inequality and state the most lawns he has to mow.
75 + 25x ≥ 1500
57 lawns