Using first principle find the derivative of y=3(2x+4)^2​

There were 816 people at a concert when a band started to play. after each song, only half the people stayed to hear the next song. how many people were left at the concert after x songs? write a function to represent this scenario.

Find the number of real number solutions for the equation. x2 + 5x + 7 = 0 0 cannot be determined 1 2

Y= 4x + 3 y = - 1 4 x - 5 what is the best description for the lines represented by the equations?