What statements are true about the parabola represented by the equation y=-7x^2+15x+28? Select all that apply

1. The parabola has a maximum

2. Since a>0, the parabola opens up

3. Since a<0, the parabola opens down

4. The parabola has a minimum

Ajar contains a mixture of 20 black marbles, 16 red marbles, and 4 white marbles, all the same size. find the probability of drawing a white or red marble on the first draw. 125 12 01 next question ask for turn it in

Whats the name of the vertical axis

Iwill give brainliest. suppose tommy walks from his home at (0, 0) to the mall at (0, 5), and then walks to a movie theater at (6, 5). after leaving the theater tommy walks to the store at (6, 0) before returning home. if each grid square represents one block, how many blocks does he walk?