18) Value of b is : 
Option A is correct.
19) Option C is correct.
Step-by-step explanation:
18) We need to find the value of b.
The given equation is:
Solving to find the value of b:
So value of b is :
Option A is correct.
19) We need to find the correct graph of the equation:
Solving:
The values of y will be less than three. As y < 3 so, the circle on y is not filled.
So. Option C is correct.
Keywords: Solving Inequalities
Learn more about Solving Inequalities at:
#learnwithBrainly
1. x^2 + y^2 - 4x + 12y - 20 = 0 ---- (x-2)^2 + (y+6)^2 = 60
3. 3x^2+ 3y^2 + 12x +18y - 15 = 0 --- (x+2)^2 + (y+3)^2 = 18
5. 2x^2 + 2y^2 - 24x - 16y - 8 = 0 --- (x-6)^2 + (y-4)^2 = 56
I don't know the other two, hope I helped though.
I'm just going to write out the answers.
1. 3/6 < 1
2. 5/4 > 1
3. 8/10 < 1
4. 5/8 < 1
5. 7/9 < 1
6. 9/10 < 1
7. 5/8 < 1
8. 11/8 > 1
9. 32/35 < 1
10. 33/36 < 1
11. 13/15 < 1
12. 45/54 < 1
13. 11/10 > 1
14. 52/46 > 1
15. 19/21 < 1
16. 78/80 < 1
Hope this helps! :)
Answer: 
<u>Use the slope formula</u>
<u>Note</u>
Answer:
83/100 x 180
Step-by-step explanation:
We have to find the cost of the ticket after the discount.
100% - 17%= 83%
83% of the total percentage of the original price that he needs to pay.
So we do:
83/100 x 180
So, this would be the expression.
Hope this helps!:)
