An intermediate algebra teacher bases final grades on points earned for activities as given in the Graded

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An intermediate algebra teacher bases final grades on points earned for activities as given in the Graded Classwork table on the left. To determine final grades, the teacher strictly adheres to the point ranges given in the Grade Distribution table on the right.image



Suppose Mark earns only 15 points in homework and vocabulary, 40 points in daily activities, and 50 points in lab participation. Repeat Exercise 75 using these values.



Data from in Exercise 75


Suppose Lauren earns all of the homework and vocabulary points, 50 points for daily activities, and 90 points for lab participation and completion.


Let x = points to be earned on exams.


(a) Write three inequalities to find the minimum number of points she needs on exams to earn grades no lower than A, B, and C.


(b) Solve each inequality from part (a) to find the minimum number of points she needs for each grade. What “test average” (as a percent) corresponds to this number of points, given that exams account for 450 possible points? (Round up to the nearest whole number.)

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Intermediate Algebra

ISBN: 9780134895987

13th Edition

Authors: Margaret Lial, John Hornsby, Terry McGinnis

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