Marcy loves to do puzzles. Last week, she spent 2 hours putting together a puzzle with 300 pieces. This week, she wants to put together a puzzle with 450 pieces. If she keeps the same pace, how many hours should it take Marcy to put the puzzle together this week?

It should take Marcy 3 hours to complete the 450 piece puzzle.

Step-by-step explanation:

We know that it takes Marcy 2 hours to finish a 300 piece puzzle. When we divide each part in half we get it takes Marcy 1 hour to do a puzzle that is 150 pieces. Then, we can add those parts together, getting 450 puzzle pieces, and 3 hours.

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3. (5x + 1) - (-10x + 6)

simplify the answer choice. combine like terms. remember to distribute the negative to the terms inside the second parenthesis. also remember that two negatives = one positive, and one of each sign = negative.

- (-10x + 6) = + 10x - 6

simplify. combine like terms:

5x + 1 + 10x - 6

5x + 10x + 1 - 6

15x - 5

∴ it is your answer

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