What is the value of 3 + (-1/4)² ÷ 1/2?

a. 6 1/8
b. 21 1/8
c. 7
d. 3 1/8

The height of a flare fired from the deck of a ship in distress can be modeled by h(t)= -2(8t^2-52t-28), where h is the height of the flare above water and t is the time in seconds. a. find the time it takes the flare to hit the water.

For problems 29 - 31 the graph of a quadratic function y=ax^2 + bx + c is shown. tell whether the discriminant of ax^2 + bx + c = 0 is positive, negative, or zero.

If value of cos330° is √3/2 then find tan165°.