The graph of which function has a y-intercept of 3

Which statement accurately explains whether a reflection over the x-axis and a 180° rotation would map figure acb onto itself?

What number produces an irrational number when multiplied by 1/4

Three problems for 50 ! 1- -3t=99 2- 1/6k=-11 3- 4 1/2 +q=9 1/2 show work thx s !