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

right

step-by-step explanation:

answer: entity is prob the answer

step-by-step explanation:

the answer is c hope this

answer: 5 17/33 % (to the tenth)

step-by-step explanation:

he guessed: 34.5 pounds

actual weight is 32.7

there for he is off:

34.5 -32.7 = 1.8

32.7 is the 100%

1.8 represents %? of 32.7

therefore:

32.7   - 100%

1.8     -     x%

x= 1.8*100%/32.7% = 18*100%/327%

x=1800%/327%   = (5 165/327)%

to the tenth:

5 17/33 %