Which expression is equivalent to 5.3(3.7x + 4.8y) – 2.7(9x – 7.2y) – (3.1x + 7y) A. 40.81x + 37.88y
B. -7.79x + 37.88y
C.-7.79x + 11y
D. 40.81x + 11y

Which of the expressions (on the photo document i inserted) together represent all solutions to the following equation? 8cos(12x)+4=-4 *the answer should be in degrees.* > i would like for someone to explain the process to find the solutions for this.

Find the vertex of the function given below y=x^2-6x+1

You drop a rubber ball off the roof of a 50 meter high building onto a paved parking lot. it bounces back up with every bounce, but not quite all the way back up to you. after the first bounce it bounces back only 80 percent of the distance it was dropped from. the pattern continues, meaning after every bounce it comes up to just 80 percent of the previous maximum height. so if before the first bounce the height is 50 meters, what height does the ball reach after the fifth bounce? round your answer to one decimal place and chose the correct response from the choices below: