Which statement is true about this quadratic equation?
y = –2r2 + 9.r – 12

One statement might be that it has no real roots.

Step-by-step explanation:

The discriminant b^2 - 4ac

= 9^2 - 4*-2*-12

= 81 -96

= -15

- so no real roots.

c

step-by-step explanation:

it isn't d, because the interquartile range is from 27-57. and the interquartile range is basically half the data, it's pretty obvious.

it isn't b, because like i said earlier, the interquartile range is from 27-57. 57-27 is 30. the real range has to be longer

not a either. although it looks like it, 3/4 of the data is not greater than 27. but if c is wrong than this should be correct

the correct answer is c, because 13 is the point in which the plot starts

b

step-by-step explanation:

u take $75 minus $60.the anwer/original($75)multiply by 100