MATH 208 Final Review (Latest Update)
Questions and Verified Answers| 100%
Correct| Grade A- Concordia
Q: How to graph a linear inequality
Answer:
1.Graph the line as either dashed or solid (<,>
represent a dashed line)
2.Chose a point that does not fall on the line and input into the inequality
3.If it satisfies the inequality, shade the plane with that point. If not, shade the other
plane
4.To find the intersection point, set both equations equal to each other
Q: What are the two equations to use for permutations?
Answer:
nPr which is equal to n!/(n-r)!
Q: What are the two equations to use for combinations?
Answer:
nCr which is equal to n!/(n-r)!r!
Q: What is the simple interest formula?
Answer:
, I=PRT
Q: What are the two formulas for arithmetic sequences?
Answer:
1.an = a1 + (n-1)d
2.Sn = ((a1+an)/2) x n
Q: What are the two formulas for geometric sequences?
Answer:
1.an = a1(r)^n-1
2.Sn = (a1(1-r^n))/1-r
Q: Strategy to maximize a point?
Answer:
1.Graph all of the lines and inequalities
2.Determine the feasible region and find all of the corner points
3.Determine the most optimal corner point
Q: Strategy for an input-output economy question with only 2 industries?
Answer:
1.Create a technology matrix and subtract it from I (I-M).
2.Find this matrices inverse by doing the weird row operation technique.
3.Multiply the inverse matrix by the demand matrix.
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