Write an inequality that means the same thing as this sentence:
"Five less than a number is greater than or equal to negative six."
x - 5 >=-6
100
Is the given number the solution to the equation? 3x - 6 = 0; 2
yes, 3(2) - 6 equals zero.
200
1 = x - 10
x = 11
200
1000x = 3
3/1000
200
What is the difference between an inequality whose graph has a closed dot on the number and an inequality whose graph has an open circle on the number?
Closed dot means the number is included in the solution set. Open circle means it is not.
200
Write and solve an equation that means the same thing as this sentence:
"The product of a number and four decreased by 2 is equal to fourteen."
4x - 2 = 14
x = 4
200
What do you have to do when you multiply or divide both sides of an inequality by a negative number?
You have to reverse the inequality sign.
300
4 = 3 + x
x = 1
300
x/4 = -14
-56
300
Draw the graph of:
0.75 < x
Open Circle shaded to the right.
300
Solve the inequality. Graph the solution on the numberline.
x - 3 > 7
x > 10. Open Circle shaded to the right.
300
Solve the equation below for x:
2x + 3x = 5 + 25
x = 6
400
2 + 6 = x - 5
x = 13
400
3 = x/15
x =45
400
Solve and graph: 5 > x - 3
x < 8. Open circle shaded shaded to the left.
400
Solve the equation 3x + 7:
3 = x
x = 16
400
Solve the equation for x: 13 - 5 = 4x
x = 2
500
x - 1/4 = 2/5
13/20
500
2/3 = x/9
x = 6
500
Draw the graph of:
-2.5 < x
Open circle shaded to the right.
500
John wants to buy a new shirt. The shirt he wants normally costs $25, but today it is 20% off. How much will John pay for the shirt?