Question 2 (10 points) A number line is shown below. The numbers 0 and 1 are marked on the line, as are two other numbers a and b. Which of the following numbers will be negative? Choose all that apply.
Question 2 options:

a - 1

a - 2

-b

a + b

a - b

Question 3 (10 points)
Rae was estimating the difference between two positive numbers x and y (where x > y). First she rounded x up by a small amount. Then she rounded y down by the same amount. Finally, she subtracted the rounded numbers.

Which of the following statements is correct?
Question 3 options:

Her estimate is larger than x − y.

Her estimate is smaller than x − y.

Her estimate equals x − y.

Her estimate equals y − x.

Her estimate is 0.

There is not enough information to compare x − y with her estimate.

Question 4 (10 points)
Each of the four expressions below the number line belong in one of the boxes. Which of the choices below shows the correct placement of each expression?

just skip this one

Question 5 (10 points)
The average surface temperature on Jupiter is −162ºF. The average surface temperature on Saturn is 46ºF less than on Jupiter. What is the average surface temperature on Saturn?
Question 5 options:

−116º Fahrenheit

−126º Fahrenheit

−208º Fahrenheit

−218º Fahrenheit