Answer:
1999
Step-by-step explanation:
y=-15x^2+64x+360
y=-15(1)^2+64(1)+360
y=409
(y is in millions)
I hope this helps!
I believe the answer for B is 1
Answer: 25 girls
Step-by-step explanation:
Discriminant = b^2 - 4ac, where a, b and c come from the form of the quadratic equation as ax^2 + bx + c
Discriminant = (4)^2 - 4(1)(5)
= 16 - 20
= -4
-4 < 0, therefor there are no roots
(If the discriminant = 0, then there is one root
If the discriminant > 0, there are two roots, and if it is a perfect square (eg. 4, 9, 16, etc.) then there are two rational roots
If the discriminant < 0, there are no roots)
