Find the value of each trigonometric ratio as a fraction.

Which of the following expressions is equal to 2x^2+8

Find the slope and the y-intercept if there's one and the equation of the line given these two points( 3, 2) and( 3, -4)

How do i start to solve? would appreciate a walk-thru! a bird sitting 16ft above the ground in an apple tree dislodges an apple. after how many seconds does the apple land on the ground? (assuming that no branches will interfere with it's fall)