Expressions &variables
Evaluate:3x + 4 when x = 2.
10
Solve: x + 7 = 12.
x = 5
What is -4 + 9 .
5
Solve: x + 3> 8.
x >5
What is the formula for the area of a rectangle.
A = length x width
Simplify:5a +3a.
8a
Solve: y - 9 = 4.
y = 13
What is -7 - 3.
-10
Solv ; y - 4 < = 10.
y <=14
Find the area of a rectangle with length 8 and width 5.
40 square units
Evaluate:2y^2 when y =4.
32
Solve: 3x =21.
x = 7
What is -6 x 5.
-30
Solve: 2x < 12.
x < 6
what is the slope of a line that goes up 6 and right 3.
2
simplify 7x -2x +9.
5x + 9
Solve: x/5 = 6.
x = 30
What is 3/4 +1/4.
1
Solve: x/3 > = 5.
x >=15
What is the y- intercept in y = 2x +7
7
Write an expression for: "6 more than a twice a number."
2x + 6
Solve: 2x + 5 = 17.
x = 6
what is -24/ -6 .
4
Solve: -2x > 8.
x < -4
A triangle has angles of 40 degrees and 60 degrees. What is the third angle.
80 degrees