Exploring STAAR Algebra 1 EOC Released Exam Questions 21-25

This video tutorial covers problems 21 through 25 of a released exam. It includes solving a square surface area problem, analyzing car depreciation using graphs, writing linear equations in standard form, setting up systems of equations, and factoring quadratic equations. The instructor provides step-by-step explanations and emphasizes the importance of understanding concepts and taking time to avoid mistakes.

What formula represents the area of a square surface after adding 25 square feet?

• x^2 + 25

• 2x + 25

• x^2

• 25x

What is the correct way to add 25 square feet to the area of a square?

• Multiply the side length by 25

• Add 25 to the side length before squaring

• Square the side length then add 25

• Divide the square of the side length by 25

What is true about a car's depreciation over the first few years?

• It appreciates in the first three years.

• It depreciates more in the first three years.

• Depreciation is constant every year.

• It depreciates evenly over time.

How does a car's value change over time according to the graph?

• Increases over time

• Decreases more in the later years

• Remains constant after the first year

• Loses most value in the beginning

What is the standard form of the equation with a slope of 1/4 passing through (4, -8)?

• x - 4y = -36

• x + 4y = 36

• 4x + y = -9

• x - 4y = 36

What is the y-intercept of the line with slope 1/4 passing through (4, -8)?

• 9

• -8

• 4

• -9

How do you write the equation for the total number of sheets in spiral and memo books?

• 5s + 3m = 810

• s - m = 30

• s + m = 30

• 3s + 5m = 810

What represents the difference in the number of sheets between spiral and memo books?

• 3s - 5m = 810

• m - s = 30

• s - m = 30

• s = m + 30

What is the factored form of 6x^2 - 13x + 5?

• (2x + 5)(3x - 1)

• (6x - 5)(x - 1)

• (3x - 1)(2x - 5)

• (3x - 5)(2x - 1)

Which method can be used to verify the correct factorization of a quadratic equation?

• Substitution

• Division

• FOIL method

• Graphing