Algebra 1--Please, help me!

1. Maria has 8 cups of a fruit punch that consists of 25% orange juice and 75% apple juice. She wants to make a drink that is 40% orange juice. How many cups of orange juice should Maria add to th mixture?

A: ?

Determine whether the trinomial is a perfect-square. If so, factor. If not, explain.

2. 16x^2 - 24x - 9

A: ?

(I think this trinomial may be a perfect-square, but my textbook tells me otherwise.

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  1. (4x-3)^2 = 16x^2 - 24x + 9
    You have -9. A perfect square will never end in a negative number.

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    posted by Steve

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