The temperature at midnight was 9 degrees Fahrenheit. At sunrise the temperature was 11 degrees Fahrenheit lower. Which number sentence below represents the temperature change? -9 - 11

9 - 11

-9 + 11

9 + 11

Fanny mendelssohn manages all the magazines and paperback books at a local grocery store. she prices many paperbacks to sell at $7.99. the cost to the store is $5.29. what is the markup rate on a paperback book, based on its cost?

If the perimeter of the garden is 37 ft. the width is x and the length is 15 ft. what is the width of the garden in feet?

Sole the equation 6n + 9 = -3n - 21 - 6 for n