Which of the following is the discriminant of the polynomial below?
x2 + 4x +5
A. 5
B. 4
C.-4
D. -16

Julia chooses a card at random from her set of cards. what is the probability that the card is labeled cat or hamster?

If f(x)=-x^2+6x-1 and g(x)=3x^2-4x-1,find(f+g)(x)

White shapes and black shapes are used in a game. some of the shapes are circles. while the rest are squares. the ratio of the number of white shapes to the number of black shapes is 5: 11. the ratio of the number of white cicrles to the number of white squares is 3: 7. the ratio of the number of black circles to the number of black squres is 3: 8. work out what fraction of all the shapes are circles.