Change 4x - 5y = 20 into y=mx + b form.
A y = -4/5x + 4
B y = -4/5x - 4
C y = 4/5x + 4
D y = 4/5 x - 4

D y =4/5x-4

Step-by-step explanation:

4x - 5y = 20 minus 4x in both sides

-5y=-4x+20 divide -5 in both sides

y = 4/5 x - 4

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step-by-step explanation:

wholesale price is the initial price before markup. retail price comes after the markup.

a price of 8 bucks that's marked up by 100%   is

formula: initial price + (percent markup in fraction/decimal)(initial price)

8+(1)(8)

8+8

16

retail price is $16.