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8000 + 8800 + 8000 + 8 million + 80 trillion + another a katrillion equals

Which of the following is true for the relation f(x)=2x^2+1

Draw a tape diagram to represent each situation. for some of the situations, you need to decide what to represent with a variable andre bakes 9 pans of brownies. he donates 7 pans to the school bake sale and keeps the rest to divide equally among his class of 30 students