Which of the following has a graph that is a straight line?

equation 1: y = 2x + 7

equation 2: y2 = x − 1

equation 3: y = 2x2 + 4

equation 4: y = 3x3

Abouncy ball is dropped such that the height of its first bounce is 5.5 feet and each successive bounce is 64% of the previous bounce's height. what would be the height of the 7th bounce of the ball? round to the nearest tenth (if necessary).

What is 20+(5 x 2/5 )+ 3 show your work

In which form is the following function written? y = - 2(x – 3)(x + 5)