C :) brainiest? This is correct because I did the math lol
Answer:
Ok
Step-by-step explanation:
-3x-5=16
at 5 to both sides
-3x=21
divide by -3
x= -7
Domain:(−∞,∞)
Range: (−∞,∞)
Answer:
day 540
Step-by-step explanation:
He increases his number of situps by 2 each day meaning on day 1 he'd do 2 extra, on day 2 he'd do 4 extra, on day he'd do 6 extra etc. We can show this by saying +2x where x is the day he is on. Then since he started with 20 we have to add 20 so it would be 20+2x. We want to know what day it is when he does 1100 situps so we can set our equation equal to 1100 and solve for X which is the day it would be.
20+2x=1100
2x=1080
I hope this helps and please don't hesitate to ask if there is anything still unclear!
x=540
<em>The origin (0, 0) is a solution to this system.</em>
<h2>
Explanation:</h2>
Remember you have to write complete questions in order to get good and exact answers. Here you haven't provided any system of inequalities, so I'll give you this system:
For the first inequality, the shaded region is above the line 
and every point on the line is included in its solution since equality is included in ≥, so the line is dashed. On the other hand, for the second inequality the shaded region is below the line 
and every point on this line is not included in the solution since equality is not included in <, so the line is dotted.
Finally, the solution to this system of inequalities is the intersection of both regions as indicated in the graph below.
As you can see, the origin (0, 0) is a solution to this system.
<h2>Learn more:</h2>
Inequalities: brainly.com/question/13177145
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