If x - 1 is a factor of x ^ 3 - k * x ^ 2 + 2x , what is the value of k?

Use the graph of the sine function y=2sinθ shown below

The larger of two number is 4 less than twice the smaller number. the sum is 41. find the numbers

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)