Day 095Quiz 1
I can apply the skills taught so far, show my reasoning, and check my answers.
Show what you know
Questions 1–1 review Unit 6 (20%). The remaining 4 questions assess the current unit. Show your work, simplify exact answers, label units, and explain when asked.
Quiz
Begin with the review questions, then continue through the current-unit questions.
- Previous unit review
Write 2^4 as repeated multiplication and evaluate.
- Current unit
Does x = 5 solve 5x + 4 = 29? Show substitution.
- Current unit
Solve x + 5 = 13/2. Check in the original equation.
- Current unit
Solve x - 2 = 1/2. Check in the original equation.
- Current unit
Solve 5/2 × x = 5. Check in the original equation.
Answers and reasoning
Reveal the teacher answer key
- 2 × 2 × 2 × 2 = 16
The exponent counts 4 factors of 2; multiply all factors.
- Yes; left side = 29
5 × 5 + 4 = 29; compare with 29.
- x = 3/2
Subtract 5 on both sides. Then x = 3/2; substitution gives 13/2 on each side.
- x = 5/2
Add 2 on both sides. Then x = 5/2; substitution gives 1/2 on each side.
- x = 2
Divide by 5/2 on both sides. Then x = 2; substitution gives 5 on each side.