Answer: Choice A
The number line graph is visually showing every number that is 19 or smaller; hence
Note the use of a closed or filled in circle at the endpoint (in contrast to an open circle). This indicates we are including the endpoint 19 as part of the solution set, and that's why we go for "or equal to" as part of the inequality sign.
The correct works are:
The function is given as:
The interpretation when Steven is asked to calculate Blue(s + h) is that:
Steven is asked to find the output of the function Blue, when the input is s + h
So, we have:
Evaluate the exponent
Expand the bracket
So, the correct work is:
In (a), we have:
The difference quotient is represented as:
So, we have:
Evaluate the like terms
Evaluate the quotient
Hence, the correct work is:
Read more about function notations at:
Answer: -3/2
Step-by-step explanation:
The axis of symmetry, and thus the x-coordinate of the vertex, is given by
So, the answer is
Answer:
Lisa's team have played 24 home games and 25 away games.
Step-by-step explanation:
Given:
Let represents games played at home.
also represent games played away.
Total number of games played = 49
∴
Now according to given data:
Number of home games won =
Number of away game won =
Total games won =26
Hence
Now multiplying equation 1 by 3 we get,
Now Subtracting equation 2 by equation 3 we get,
Substituting value of x in equation 1 we get.
Hence Lisa's team have played 24 home games and 25 away games.