Yesterday morning, the temperature was -11ËšF. The temperature increased 7ËšF by noon and then decreased 4ËšF by nightfall. What was the temperature at nightfall last night?

Damon makes 20 cups of lemonade by mixing lemon juice and water. the ratio of lemon juice to water is shown in the tape diagram. lemon juice\text{lemon juice} lemon juice water\text{water} water how much lemon juice did damon use in the lemonade? cups

The coordinates r(1, -3), s(3, -1) t(5, -7) form what type of polygon? a right triangle an acute triangle an equilateral triangle an obtuse triangle

What is the slope of the line that passes through the points (–9, 2) and (0, 4)? the slope of the line is