Problem

Solve the problem by using an inequality. See Examples 7–9.Weighted average. Professor Jor...

Solve the problem by using an inequality. See Examples 7–9.

Weighted average. Professor Jorgenson gives only a midterm exam and a final exam. The semester average is computed by taking of the midterm exam score plus of the final exam score. The grade is determined from the semester average by using the grading scale given in the table. If Stanley scored only 56 on the midterm, then for what range of scores on the final exam would he get a C or better in the course?

Grading

Scale

90–100

A

80–89

B

70–79

C

60–69

D

Table for Exercises 87

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