Algebra II Semester Exam Review

Find the exact solutions using the quadratic formula to 2x² - 4x + 1 = 0.

• (4 ± √2)/4

• (4 ± √8)/4

• (2 ± √2)/2

• (2 ± √3)/2

• 30x + 10y

• 4y + 2x

• 14x + 22y

• 4x + 2y

What is the Z-score for Alex if he scored 85 on a test, the mean was 75 and the SD was 5?

• -2.0

• +2.0

• +1.0

• -1.0

What is the degree of the polynomial? g(x) = 2x^3 + 5x^2 - 3x + 7.

• Positive

• Odd

• Negative

• Even

How do you find the y-intercept?

• set denominator equal to 0

• replace all x-values with 0

• replace all y-values with 0

• compare the degrees of the numerator and denominator

• 0

• 5

• 10

• 15

How many seconds will it take for the rocket to reach a height of 1,304 feet?

• 81.0 seconds

• 9.6 seconds

• 82.0 seconds

• 9.0 seconds

What is the equation of this parabola in vertex form?

• f(x) = (x + 8)^2 + 15

• f(x) = (x + 1)^2 + 4

• f(x) = (x - 4)^2 + 15

• f(x) = (x - 4)^2 - 1

After how many seconds will the ball reach a height of 25 feet?

• 1.369 seconds

• 0.559 seconds

• 1.559 seconds

• 0.254 seconds

Solve the quadratic to find the roots: y = 6x^2 - 54

• x = ± 3i

• x = ± 9

• x = ± 3

• x = ± 9i