I strongly believe the answer is c
Hope this helps in some way:)
If you're trying to find the missing side of the "triangle" (the distance from the house to where the ladder touches the ground), you would use the pythagorean theorem, a²+b²=c². (c is always hypotenuse)
a²+b²=c²
12²+b²=15²
144+b²=225
b²=81
√b²=√81
b=9
Y - 3 = -2(x+5)
y - 3 = -2x - 10
+3. +3
y = -2x - 7
