Question

@phi Could you check my answers please?

Answer 1

9. A
10. C

Answer 2

Am I correct?

Answer 3

@phi

Answer 4

@mathmale Can you check my answers?

Answer 5

yes
9 A

Answer 6

So 10 is wrong?

Answer 7

Would 10 be D?

Answer 8

I mean C, sorry.

Answer 9

none of the choices for 10 look correct to me.
I get: pi/4, 5pi/4, 9pi/4, 13pi/4

Answer 10

I'll go with B then because two of those options match that option.. I'll let my teacher know about that error though.

Answer 11

@phi Could you check two more questions for me? I just need them checked and I can open a new post.

Answer 12

graph the equation and find the x-intercepts