The height why (in feet) of an arrow t seconds after it is shot from a bow can be modeled by the Function Y=-16t^2+80t+6

65 8 7 4 5 6 8 4 3 2 1 9 5 6 4 2 1 6 5 1 5 1 3 2 3 5 multiply the third number in the first row by the seventh number in the third row. add this result to the fifth number in the second row. add to this total ten times the fourth number in the third row. subtract the eighth number in the first row from the result.

Complex numbers multiply √-4 * √-25 and show all intermediate steps. alternative notation is sqrt(-4) * sqrt(-25).

Angles r and s are complementary. the measure of angle r is 31 degrees. which equation can be used to find angle s?