ANSWER
B. 1
EXPLANATION
The given function is

This is a piece-wise defined function.
We want to find f(1)
We substitute x=1 into f(x)=x because, 1 belongs to the interval,
1≤x≤5
f(1)=1
The correct answer is B.
Substitute 5 and 3 for a and b in the original expression.
8(a+b)
8(5+3)
Using the rules of PEMDAS, solve the inside of the parentheses first, then multiply accordingly.
8(8)
<u>The final answer is 64.</u>
184 / 23 = 8
so it would be 8
Answer:
Step-by-step explanation:
Since your population are the students in math class, you can use the z-score formula
in order to comparing the two math test scores. Where
is the mean for the class,
is the standars deviation and x is Mary score.
For the first test
, so ,
.
For the second test
, so ,
Mary do better in the second test, relative to the rest of the class (because
, it means the second score is nearer to the mean score of the class than the first one )