I need help pls

The parabola y = x² - 4 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.

Ten members of balin's soccer team ran warm ups for practice. each member ran the same distance. their combined distance was 5/6 of a mile. to find the distance that each member ran, balin wrote the expression below.