9. x < −17
10. x < 6
11. 10 < x < 21
12. Move all terms not containing x from the center section of the inequality. No solution.
13. −3 < x < 3
Please give brainliest I worked hard.
Answer:
f(x)=(x-1)^2+3
Step-by-step explanation:
Both equations vertexes equal (1, 3) while the rest do not match.
Answer:

Step-by-step explanation:
b. m∠B = 60° Because it’s an equilateral triangle