For problems 1 to 4 find: a) domain, b) range and c) determine if it is a function and explain your reasoning. 1) {(3, 2), (5,7),(1,4), (9,2), (3, 7) }

2) {(6,2), (3,5), (9,0), (5,7), (8, 1)}

3) {(1,9), (2,7), (5,4), (7, 12), (3,9)}

4 {(0, 2), (3, 3), (8, 7), (2, 2), (3,9)}​

For a school newspaper article, cienna conducted a survey to find out students’ favorite subjects. she polled all the students in mrs. lopez’s advanced dance class. why is her data likely to be skewed? honors dance students are more likely to enjoy dance than students in the general population, so dance may be overrepresented. cienna should have interviewed all the students in the school to get more accurate data. honors dance students are more likely to enjoy dance than students in the general population, so dance will be underrepresented. cienna should have interviewed only every other student in the class to avoid having too many people.

Two streets intersect at a 30- degree angle. at the intersection, the are four crosswalks formed that are the same length. what type of quadrilateral is formed by the crosswalks?

The base of a triangle exceeds the height by 7 centimeters. if the area is 400 square centimeters, find the length of the base and the height of the triangle.