Algebra I Practice 2.9

Name: _____________________________________________

Directions: Read each problem carefully before responding. Make sure to show your work to receive credit. 1)

Mr. Spinner drove at a rate of 62 miles per hour for 3 hours. He then entered a construction zone and drove at 55 miles per hour for 2 hours. What was his average speed?

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2)

In a college, some courses contribute more towards an overall GPA than other courses. For example, a Science class is worth 4 points; Mathematics is worth 3 points; History is worth 2 points; and English is worth 3 points. The values of the grade letters are as follows, A= 4, B=3, C=2, D=1, F=0. What is the GPA of a student who made a “C” in Trigonometry, a “B” in American History, an “A” in Botany, and a “B” in Microbiology?

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3)

Maggie recently took a road trip. She bought 15 gallons of gasoline for $1.68 per gallon and 12 gallons at a price of $1.76 per gallon. She filled her tank once on the way back with 16 gallons at $1.65 per gallon. What was the average fuel cost per gallon on Maggie’s trip?

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4)

The table below shows the test grades for five Algebra students. The final test will count as three test grades. Write an expression to find each student’s weighted average grade and then find the final grade. Show all work! a.

Bob’s Grade?

______________________ b.

Faye’s Grade?

______________________ c.

Cheryl’s Grade?

______________________ d.

Rosa’s Grade?

______________________ Expanding the Concept: 5) If Bob had earned 100% on his final test would he have gotten a “A” (90% or higher) in the class?

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