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Home > AC > Chapter 1 > Lesson 1.1.2 > Problem 1-12

1-12.

Latisha is determined to do well in school this year. Her goal is to maintain at least an average in all of her courses.  

  1. Latisha started with two scores: and . Confirm that the average of these two scores is . Show your work.

    To find an average, add the scores Latisha received together and divide by the number of scores she had.

  2. Latisha's third score is . Use her scores from part (a) to figure out her average now. Be sure to show your work.

    Remember you now need to add 90% to the scores and divide by the number of scores you have now.