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.

-3y + 2 < \( \frac{y}{2} \)
2 x (-3y + 2) < y
(2 x -3y) + (2 x 2) < y
-6y + 4 < y
-6y + 4 - y < 0
-6y - y < -4
-7y < -4
y < \( \frac{-4}{-7} \)
y < \(\frac{4}{7}\)

To multiply monomials, multiply the coefficients (the numbers that come before the variables) of each term, add the exponents of like variables, and multiply the different variables together.

(6a)(8ab) + (7a²)(4b)
(6 x 8)(a x a x b) + (7 x 4)(a² x b)
(48)(a¹⁺¹ x b) + (28)(a²b)
48a²b + 28a²b
76a²b

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.

The first step to solve a quadratic expression that's not set to zero is to solve the equation so that it is set to zero:

c² - 2c - 15 = 5c + 3
c² - 2c - 15 - 3 = 5c
c² - 2c - 5c - 18 = 0
c² - 7c - 18 = 0

Next, factor the quadratic equation:

c² - 7c - 18 = 0
(c + 2)(c - 9) = 0

For this expression to be true, the left side of the expression must equal zero. Therefore, either (c + 2) or (c - 9) must equal zero:

If (c + 2) = 0, c must equal -2
If (c - 9) = 0, c must equal 9

So the solution is that c = -2 or 9

The formula for circumference is circle diameter x π. Circle diameter is 2 x radius:

c = πd
c = π(2 * r)
c = π(2 * 13)
c = 26π