The three sides of an equilateral triangle are increased by 20 cm, 30 cm,
and 40 cm, respectively. the perimeter of the resulting triangle is between
twice and three times the perimeter of the original triangle. what can you
conclude about the length of a side of the original triangle?

b.an increase in a causes b to decrease

answer: y = 3/2 x - 3

y = 1/8 x - 3/4 that would be your correct option

step-by-step explanation: w

the image is given below

since the options are not given so we draw it from the equation

the given equation is

y = (x-1) (x+4)

y = y² + 3x - 4

the above equation is a quadratic equation which will have two roots. if we draw the graph for it, it will look like this