Devan checked the thermometer outside his window before going to bed. The temperature was 3 F. During the night, he woke up and saw that the temperature had dropped 17 degrees. At noon, Devan noticed that the temperature had risen 21 degrees. What was the temperature at noon?

Ben bowled 124 and 188 in his first two games. what must he bowl in his third game to have an average of at least 160?

The height of a birch tree, f(x), in inches, after x months is shown in the graph below. how much does the birch tree grow per month, and what will be the height of the birch tree after 10 months? a. the birch tree grows 1 inch per month. the height of the birch tree will be 16 inches after 10 months. b. the birch tree grows 2 inches per month. the height of the birch tree will be 26 inches after 10 months. c. the birch tree grows 3 inches per month. the height of the birch tree will be 36 inches after 10 months. d. the birch tree grows 2 inches per month. the height of the birch tree will be 24 inches after 10 months.

Evaluate each expression. determine if the final simplified form of the expression is positive or negative -42 (-4)2 42