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B Solve the following:
1. The length of a rectangle is 12y2 - 15y + 7 and the width is
3y. Find the area of the rectangle.
2. Maria adds her grades for the first grading period and
obtains 14x? +31x + 15. If she has 2x + 3 subjects, what her
average grade?​


Sagot :

Answer:

7+7+7+7+7+7+++7+7+7777+777+777+7777+77777+7777++77+777+888+888+888+888+888+888+888+777+777+777++7777+777+777+777+777+777+777+777+777+777+777+777+7777+777+777+777+777