PLEASE HELP ME In the system of equations below, k is a constant. If the system has infinitley many solutions what is the value of k

3x-7y=k
-6x+14y=20

At school there are 526 students and 263 are girls about how likely is it that a randomly chosen student will be a boy

Agroup of randomly selected apple valley high school students were asked to pick their favorite gym class. the table below shows the results of the survey. there are 528 students at apple valley high school. gym class number of students racquet sports 1 team sports 9 track and field 17 bowling 13 based on the data, what is the most reasonable estimate for the number of students at apple valley high school whose favorite gym class is bowling? choose 1 answer a. 9 b. 13 c. 119 d. 172

Which type of graph would allow us to compare the median number of teeth for mammals and reptiles easily