1. Two hydroacoustic stations are being established to detect explosions under water or in the atmosphere at
low altitude. Station A is located at (30, – 280) and station B at (70, – 320).
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A new hydroacoustic station is planned to be established on a line perpendicular to the line
joining these stations. Write an equation in slope-intercept form of the perpendicular line
containing station A

First, draw venn diagram and determine how many people own both cat and dog. See image attached.
x represents the number of people own both cat and dog
dog only owner + cat only owner + both cat and dog owner = 375
215 - x + 193 - x + x = 375
408 - x = 375
x = 408 - 375
x = 33
The number of people own both cat and dog is 33

Second, find the number of people own dog only
dog only = 215 - 33
dog only = 182
The number of people own dog only is 182