There are 120 students surveyed (30 from each grade). use the table below to determine what percent chance there is that a student selected at random is in 11th grade or selected science as their favorite subject? find p (11th or science)

50 %

Step-by-step explanation:

From the given table the number of 11th students = n(11th)=30

The number of science students n(S)= 6+7+5+7=25

The number of students in 11th and science= n(11th ∩ S)=5

Now, the number of students in 11th grade or selected Science

n(11th ∪ S)=n(11th)+n(S)-n(11th∩S)

⇒n(11th ∪ S)=30+25-5=60

Now, The percent chance there is that a student selected at random is in 11th grade or selected Science as their favorite subject

f(2x−x2)=−3x2+6x−1

step-by-step explanation:

set up the composite function and evaluate.

f(2x−x2)=−3x2+6x−1