I need help... asap plz thxxx
1 answer:
You might be interested in
Answer:
Domain: set of all real numbers
Range:
Step-by-step explanation:
We have to find the domain and range of the function:
This is a quadratic function, shape of a "U", that's called a parabola.
The domain is the set of x values for which the function is defined.
The range is the set of y values for which the function is defined.
Normally, any parabola in the form has domain as "all real numbers". This is the case for this problem as well, thus,
Domain = set of all real numbers
Now, for the range, we have to look at the minimum value of the function. So, the range would be y values greater than or equal to the minimum number. Lets find the minimum value of this function.
We have to find the value of x for which the minimum occurs by using the formula:
<em><u>Note: value of a is "5" and b is "10"</u></em>
Now, we plug this into the function to find the minimum value:
So, the range is set of all real numbers greater than or equal to -5.
Answer:
52.38%
Step-by-step explanation:
Given that,
Total number of students in the class is 42
Out of 42, 10 like hamburgers, 22 like pizza, 8 like french fries, and 2 like salad.
We need to find the percentage of the class chose pizza. There are 22 student who like to have pizza. Required percentage is given by :
So, 52.38% of students chose pizza.