Erick bought 13 9/12 pounds of rocks for his garden he used 7 2/3 pounds .how many pounds of rocks does he have left ?

7 2/3 = 7 8/12

13 9/12 - 7 8/12 = 6 and 1/12 pounds of rocks.

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.

f(x) has value 150 at x= 0

and 0 at x= 3

so d(f(x))/dt = slope = -150/3 = -50