There are 12 steps in the staircase. Plz don't do it for points!!! How do you get the answer 150? i am really struggling will mark brainliest.

The parabola x= √y-9 opens: a.)up b.)down c.)right d.)left

Write the sine and cosine values of a, b, respectively, in the figure for (1) and (2) + explanation.

The seventh-grade students at charleston middle school are choosing one girl and one boy for student council. their choices for girls are michaela (m), candice (c), and raven (r), and for boys, neil (n), barney (b), and ted (t). the sample space for the combined selection is represented in the table. complete the table and the sentence beneath it.