Pre-Cal Spring Semester Final Corrections

• x = 7.8

• x = 7.9

• x = 8.0

• x = 8.1

Solve the equation: log₁₂(12x) + log₁₂(x - 1) = 2. Which two statements are correct about the solutions? (SELECT TWO ANSWERS)

• x = -3 is an extraneous solution

• x = 3 is a solution

• x = -4 is an extraneous solution

• x = 4 is a solution

• x = 0 is an extraneous solution

Solve the logarithmic equation log₃(x² + 3) = log₃52.

• x = -7

• x = 7

• x = {-7, 7}

• No solution

An angle rotates around the unit circle clockwise once and then continues for 45° more in the same direction. What is the measure of this angle in radians and degrees?

The angle measure in degrees is ​ (a)   degrees and the measure in radians is​ (b)   radians.

• 405
• 360
• -315
• -405

• 52
• 128
• 45
• 135
• 60
• 120
• 30
• 140

• cos x
• sin x

The function f(x) = 2^(9x) has a vertical asymptote at which of the following?

• x = 3

• y = 0

• x = 0

• none of these

The parent graph below represents which function?

• y = cos x

• y = tan x

• y = cos⁻¹ x

• y = cot x

Which two trigonometric functions have a value of √3/2? Select TWO correct answers.

• sin(-13π/6)

• sin(8π/3)

• cos(13π/6)

• sin(10π/3)

• cos(-5π/6)

Bradley built a skateboarding ramp with a height of 2.5 feet and an angle of incline of 19°. How long is the ramp? (Round answer to the nearest tenth, no spaces in the answer.)

Mathematical Equivalence

ON