Answer:
52
Step-by-step explanation:
Alex earned 156 reward points for selling wrapping paper rolls.
Using the given equation
3r = 156
r = 156/3
r = 52
Alex sold 52 wrapping paper rolls
The slope of the line that contains the point (13,-2) and (3,-2) is 0
<em><u>Solution:</u></em>
Given that we have to find the slope of the line
The line contains the point (13,-2) and (3,-2)
<em><u>The slope of line is given as:</u></em>

Where, "m" is the slope of line
Here given points are (13,-2) and (3,-2)

<em><u>Substituting the values in formula, we get,</u></em>

Thus the slope of line is 0
<u><em>x=5/8 is the correct answer.</em></u><em> </em>First you had to simplify from both sides of equation, and it gave us,
. Then you add 1/4 from both sides of equation, and it gave us,
. And it gave us the answer is<u><em> </em></u><u><em>x=5/8 is the final answer. </em></u>Hope this helps! And thank you for posting your question at here on brainly, and have a great day. -Charlie