Cuatro personas invirtieron en su negocio cantidades proporcionales a 11, 15, 18 y
25. Si el que aportó más aportó 2800 soles más que el que aportó menos. ¿Cuánto
aportaron los cuatro?
a) 20 700
b) 13 800
C) 15 800
d) 11 800
e) 17 700

a function could be identified in 3 ways either on a chart,graph, or ordered pairs. first a function is that each point has its own. the rule is that there can be many x's to one y but there can not be 2 x's at different y's. so on a graph when you put a straight line through the y's there should be one dot only to be a function.

step-by-step explanation:

a

step-by-step explanation:

246

step-by-step explanation:

x² + 11x + 18 < 0  

[-11 ± sqrt(121 - 72)]/2 = (-11 ± 7)/2  

solution: (-9, -2)

step-by-step explanation: