The coordinate grid is composed of a horizontal x-axis and a vertical y-axis. The center of the grid, where the x-axis and y-axis meet, is called the origin.

To solve this equation, repeatedly do the same thing to both sides of the equation until the variable is isolated on one side of the < sign and the answer on the other.

7b + 2 < \( \frac{b}{3} \)
3 x (7b + 2) < b
(3 x 7b) + (3 x 2) < b
21b + 6 < b
21b + 6 - b < 0
21b - b < -6
20b < -6
b < \( \frac{-6}{20} \)
b < -\(\frac{3}{10}\)

The surface area of a cube is (2 x length x width) + (2 x width x height) + (2 x length x height):

sa = 2lw + 2wh + 2lh
sa = (2 x 5 x 2) + (2 x 2 x 1) + (2 x 5 x 1)
sa = (20) + (4) + (10)
sa = 34

To combine like terms, add or subtract the coefficients (the numbers that come before the variables) of terms that have the same variable raised to the same exponent.

7a + 3a = 10a

The entire length of this line is represented by AD which is AB + BD:

AD = AB + BD