Agardener wants to compare the heights of plants in two gardens that are watered using different tools. the heights, in centimeters, for a group of plants in the two gardens are shown.
plant heights (cm) in garden a: 15, 17, 17, 19, 19, 20, 21, 22, 22, 22, 22, 23, 23, 24, 24, 24, 26, 28, 29, 29, 30
plant heights (cm) in garden b: 10, 20, 20, 20, 21, 21, 21, 22, 23, 24, 25, 25, 25, 25, 26, 26, 26, 27, 30, 31, 32
what is the best measure of center for comparing the two data sets and what comparison can be drawn?

$18.25 ($365 divided by 20)

Ok here we go ..there are plenty of ways to solve such math problems but we will go for the smartest and easiest ..5x+2y=7  -2x+6y=9we rearrange them into the following ..by multiplying the 1st equation by 2 it becomes 10x + 4y = 14we rearrange it and so it becomes 10x = 14 - 4yas for the second equation we multiply it by 5 and rearrange it so it becomes as to the following ..-10x + 30y = 45rearranging so 10x = 30y -45now 10x equals both 14 - 4y and 30y -45so   14 - 4y = 30y -4531 = 26yy= 31/26 = 1.19 or around 1.2so by now we can calculate x easily as  -2x+6y=9so 2x = 6y -9 = 6 * 31/26 - 9 = -1.84  then x = - 0.92 or around -0.9best luck!