In Pinecrest Middle School, there are 58 sixth graders, 76 seventh graders, and 38 eight graders. The school council is made up of 35 students who are chosen to represent all the grades fairly Write fractions to represent the part of the school population that is in each grade.
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How do i do this activity, is appreciated

Sheila wants to bake six muffins but the recipe is for 12 muffins . this means you only need half of the ingredients listed how much of the of each ingredient does she need? one cup and banana chips ,7 tablespoons oil , two eggs, 3/4 cups flour 1/4 cup walnuts show all you work and justify your answer using a baby toulmin.

Each month, a shopkeeper spends 5x + 14 dollars on rent and electricity. if he spends 3x−5 dollars on rent, how much does he spend on electricity? for which value(s) of x is the amount the shopkeeper spends on electricity less than $100? explain how you found the value(s).