Algebra

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Help!

13. Use the Distributive Property to simplify 7(6x^2 + 5x + 4)

15. Evaluate 5w^2 if w = .5
Is it 6.25?

19. Write a simplified expression to represent 5 times the sum of x and 3 increased by 10.
Is it 10+5(x+3) ?

Thanks
-MC

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