### 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

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.

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.