Unit One Checkpoint Quiz

Please complete the brief quiz for Unit One below. Make sure to answer all questions.
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Multiple Choice Solve: x² = 4
x = undefined
x = ±2
x = 2
x = -2
Solve: 20 · ln e⁴ = x
x = 20
x = e⁴
x = 5
x = 80
Solve for y: 2yx⁄z = t
y = tz⁄2x
y = zx⁄2t
y = 2tzx
y = tx⁄2z

Short Answer Explain the steps to solve the folowing equation for x: -3x² ≤ -27