Algebra Basics

What’s inside

• Which expression is equivalent to 3(2x - 5) + 4x?
• What is the solution to the equation 5x - 7 = 18?
• Which factorization is correct for x² - 9?
• If y = 2x + 3, what is the value of y when x = -4?
• The slope of the line represented by y = 4x - 7 is [____].
• The value of x that satisfies 2x + 9 = 21 is [____].
• The expression 7a - 3a + 2 simplifies to [____].
• The positive solution of x² = 49 is [____].