Algebra 1 — Semester B
Free Practice · 8 Questions · 180 min
180:00 Exit
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Question 1 of 8
TEKS 9A-9C Easy Word
Which represents exponential growth?
A y = 2/x
B y = 2(3)ˣ
C y = x²
D y = 3x + 2
Explanation
📌 Exponential growth: y = a·bˣ where b > 1. y = 2(3)ˣ has b = 3 > 1.
Question 2 of 8
TEKS 10A-10E Easy Calc Word
Simplify: (3x² + 2x) + (x² − 5x)
A 3x⁴ − 3x
B 4x² + 3x
C 4x² + 7x
D 4x² − 3x
Explanation
📌 Combine like terms: (3x² + x²) + (2x − 5x) = 4x² − 3x
Question 3 of 8
TEKS 8A-8B Medium Calc Word
A rocket's height is h = −5t² + 30t. Maximum height?
A 45
B 30
C 90
D 60
Explanation
📌 t = −b/(2a) = −30/(2·(−5)) = 3. h(3) = −5(9)+30(3) = −45+90 = 45
Question 4 of 8
TEKS 1A-1G Easy Calc
Solve: x² = 64
A −8 only
B 32
C 8 only
D ±8
Explanation
📌 x = ±√64 = ±8. Don't forget the negative root!
Question 5 of 8
TEKS 7A-7C Easy Calc Word Diagram
Which graph represents a quadratic function? A B
A Both
B Neither
C B
D A
Explanation
📌 Quadratic = U-shaped parabola. Graph A shows a parabola.
Graph B is a straight line → linear, not quadratic.
Question 6 of 8
TEKS 11A-11B Easy Calc
Simplify: x³ · x⁴
A x¹
B x⁷
C x¹²
D 2x⁷
Explanation
📌 Same base → add exponents: x³⁺⁴ = x⁷
Question 7 of 8
TEKS 6A-6C Easy Calc
Solve: x² − 9 = 0
A 3 only
B −9
C ±3
D 9
Explanation
📌 x² = 9 → x = ±3. This is a difference of squares: (x+3)(x−3) = 0.
Question 8 of 8
TEKS 12A-12E Easy Calc Word
What is the 5th term of geometric sequence: 2, 6, 18, ...?
A 54
B 108
C 162
D 486
Explanation
📌 r = 3. a₅ = 2·3⁴ = 2·81 = 162

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