B= 2000 + CD
98000 = B + CD
substitute b in
98000 = 2000 + CD + CD
add variables
98000 = 2000 + 2CD
subtract 2000 from each side
96000 = 2CD
divide each side by 2
48000 = CD
Answer:
22.36
Step-by-step explanation:
20*.86=17.2
12 *.43= 5.16
Answer:
The slope to the question provided is 
Answer:
Your friend complete 1 level per 9 hours.
You complete 5 levels in 45h so you get 1 lv per 9h 45/9=5
Answer:
speed
Step-by-step explanation:
In a distance-time graph:
Distance is the y-variable (dependent)
Time is the x-variable (independent)
The slope of a line is rise/run, or can also be calculated with this equation, where "m" is slope:

slope = y-variables / x-variables
slope = distance / time
If you divide distance by the time it took to get that far, you will find how fast you got there. This is called the speed.
You might also see this formula:
k = d/t
In the options, "time" and "distance" would not make sense, because those are the variables on the x-axis and y-axis.