A kite and its tail total 48 ft in length. the tails is 7 times the length of the body. How long is the kite's tail?

What is the vertex form of f(x) = x2 + 6x + 3

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.

Question: what is the value of x 4x-2= (-7) +5x. it would be greatly appreciated if someone could actually explain to me step by step