Compare the variability of expenditure of families in two towns as given below. Expenditure (Rupees) No. Of Families Town A Town B 21-30 3 2 31-40 61 14 41-50 132 20 51-60 153 27 61-70 140 28 71-80 51 7 81-90 2 2

80x^8−68x^6+16^5−20x^4−4x^3+8x^2

hope i'm right lol

step-by-step explanation:

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1) the property is   ixi = a ⇔x = a   o x = -a

4(x-5)+3= 15⇒4x-20+3 = 15⇒4x-17= 15⇒4x = 15+17⇒4x = 32⇒x =32/4= 8

4(x-5) +3= -15⇒4x-20 +3 = -15⇒4x-17= -15⇒4x =-15+17⇒4x = 2⇒x =2/4= 1/2

the values are x =8 and x = 0,5