21 students sleep for 9 hours each night
<em><u>Solution:</u></em>
Given that, Mr.Lee wants to survey 20 of the 210 students in seventh grade about the hours they sleep each night
He finds 2 of the 20 students surveyed sleep for 9 hours each night
Therefore, 2 out of 20 students sleep for 9 hours each night
Find out the percentage of 2 out of 20

Thus 10 % of 210 students sleep for 9 hours each night
Find out 10 % of 210

Thus 21 students sleep for 9 hours each night
To solve this equation, plug your input value into the function to find your output.
This would leave you with:
f(4)=4+21
Add the two integers together:
f(4)=25
So he output value of that function with he input of 4 would be 25.
1/5 because there are five options and there is only one answer correct so there is only one out of five chance so if that is not an option go with 1/3
Answer:
A rotation 90 degrees clockwise about the origin followed by a dilation with scale factor A
Step-by-step explanation:
The rotation is going clockwise, so that already eliminates the first, second, and third answer, leaving answer C
Answer:
53
Step-by-step explanation:
The smallest number of degrees is the smallest angle
53 is the smallest number