Arrange the equations in the correct sequence to find the inverse of f(x) =y = 3x/8+x

these must be in correct order!

titles

x(8 + y) = 3y
y=f^-1(x) = (3-x)/8x
8x=3y-xy
8x=y(3-x)
8x=y(x-3)
x= 3y/8+y
y=f^-(x) = 8x/3-x
8x+xy = 3y

Worth 30 points! in this diagram, both polygons are regular. what is the value, in degrees, of the sum of the measures of angles abc and abd?

If m∠abc = 70°, what is m∠abd? justify your reasoning.  using the addition property of equality, 40 + 70 = 110, so m∠abd = 110°.  using the subtraction property of equality, 70 − 30 = 40, so m∠abd = 30°.  using the angle addition postulate, 40 + m∠abd = 70. so, m∠abd = 30° using the subtraction property of equality.  using the angle addition postulate, 40 + 70 = m∠abd. so, m∠abd = 110° using the addition property of equality.

What is 617.3 miles and each gallon of gas the car can travel 41 miles select a reasonable estimate of the number of gallons of gas karl used.