1. How much warmer is \(82^\circ\) than \(40^\circ\)?
2. How much warmer is \(82^\circ\) than \(\text-40^\circ\)?
3. How much warmer is \(\text-40^\circ\) than \(82^\circ\)?

1. The Emperor penguin keeps its egg warm through the winter by holding it on top of its feet and under a brood pouch. The temperature inside the pouch is \(36 ^\circ \text{C}\). If this is \(78^\circ\) warmer than the outside temperature, what is the outside temperature?
2. After the baby penguin hatches, it needs to grow up for about 150 days before it can start swimming. The ice shelf melts away in the summer when the surrounding temperature reaches about \(\text-4^\circ \text{C}\). What is the difference between the summer and winter outside temperatures?

Find each difference.

1. the difference of -5 and 6

2. the difference of 35 and -8

3. \(\frac25 - \frac35\)

4. \(\text-4\frac38 - (\text-1\frac14)\)

A family goes to a restaurant. When the bill comes, this is printed at the bottom of it:

How much was the price of the meal? Explain your reasoning.

A company produces screens of different sizes. Based on the table, could there be a relationship between the number of pixels and the area of the screen? If so, write an equation representing the relationship. If not, explain your reasoning.

Which is a scaled copy of Polygon A? Identify a pair of corresponding sides and a pair of corresponding angles. Compare the areas of the scaled copies.

Six L-shaped figures on a grid. Figure A. The vertical part of the L is 1 unit wide and 5 units tall. The horizontal part of the L is 1 unit tall and 3 units wide. Figure B. The vertical part of the L is 2 units wide and 5 units tall. The horizontal part of the L is 1 unit tall and 6 units wide. Figure C. The vertical part of the L is 1 unit wide and 7 units tall. The horizontal part of the L is 4 units wide. Figure D. The vertical part of the L is 2 units wide and 10 units tall. The horizontal part of the L is 2 units tall and 6 units wide. Figure E. The vertical part of the L is 1 unit wide and 8 units tall. The horizontal part of the L is 2 units tall and 3 units wide. Figure F. The vertical part of the L is 2 units wide and 7 units tall. The horizontal part of the L is 2 units tall and 5 units wide.