Which expression is equivalent to sin(pi/12) cos(7pi/12) - cos(pi/12) sin(7pi/12)? O Cos(-pi/2)
O sin(-pi/2)
O cos(2pi/3)
O sin(2pi/3)

You’re repairing a large rectangular aquarium. the final step is to cover the glass with a protective film. the front and back of the aquarium measure 4 meters by 2 meters, and the sides of the aquarium measure 3 meters by 2 meters. how many square meters of protective film do you need? ( )

If there is no real number solution to the quadratic equation x^2+2x+c=0 what is a possible value of c? 1 -2 0 3

On a piece of paper graph f(x)=5•(0.4)^x