19. The point (31, 25) is going to be rotated 180° around the origin. What will be the coordinates of the
image of the point after the rotation?

If $740 is invested at an interest rate of 11% per year and is compounded continuously, how much will the investment be worth in 7 years? use the continuous compound interest formula a = pert.

Lines a and b are parallel. what is the value of x? -5 -10 -35 -55

If tan2a=cot(a+60), find the value of a, where 2a is an acute angle