A group of hikers is progressing steadily along an uphill trail. The graph shows their elevation (or height above sea level), in feet, at each distance from the start of the trail, in miles.

the answer is 13

step-by-step explanation:

5*5=25

12*12=144

25+144=169

169^2=13

it has to have an angle of 90 degrees

write out the polynomial, with leading coefficient 1:

y = 1 (x+2)^1 (x-7)^1 (x-5)^2

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