Problem 1
Evaluate 3+(n-1)5 when n=4.
Hint: Substitute 4 for n and follow the order of operations.
Answer: 18
Brief Explanation: 3+(4-1)5=3+(3)5=3+15=18.
Back to Week 3
Monday
Monday - Skill Check: What Do You Know Already?
Complete this low-stakes diagnostic to check the prerequisite skills you will use with sequences and coordinate geometry.
Skill Check
Try Each Problem First
Enter an answer, check it, and use support buttons when you need a next step.
Problem 2
Find the slope of the line passing through (1,5) and (3,11).
Hint: Use m=(y2-y1)/(x2-x1).
Answer: 3
Brief Explanation: m=(11-5)/(3-1)=6/2=3.
Problem 3
Solve 2x+7=19.
Hint: Subtract 7 from both sides, then divide by 2.
Answer: x=6
Brief Explanation: 2x+7=19, so 2x=12 and x=6.
Problem 4
Identify the slope and y-intercept of y=-4x+2.
Hint: Compare the equation to y=mx+b.
Answer: m=-4, b=2
Brief Explanation: The coefficient of x is the slope. The constant is the y-intercept.
Problem 5
What is the opposite reciprocal of -2/3?
Hint: Flip the fraction and change the sign.
Answer: 3/2
Brief Explanation: The reciprocal of -2/3 is -3/2. Changing the sign gives 3/2.
Monday Self-Assessment
Remember: This is information, not a grade.
End of Monday