Mira has breakfast at a restaurant. She leaves a 20% tip of $1.80. What is the price of Mira's breakfast, before tip?

its 4 because 2 times 2 is 4, if you double the number two you get four

an

y = 6x -3y -12

y +3y +12 = 6x

=> . x = { 2y / 3 +2 } this is equation of line in terms of x

=> . if line meets the x-axis the co-ordinates of meeting point would be ( x , 0 )

=> . x = 2 ( 0 ) / 3 + 2

=> . x = 2

so, the point is ( 2 , 0 )

x= cost per bracelet

number of bracelets * x + shipping charge = total cost

so

9x+9=72