a. .75(x - .5) - 1.6 < .3
b. Soybean meal is 14% protein; cornmeal is 7% protein. How many pounds of each should be mixed together in order to get 280 pounds of 8% protein?
c. Find the solution (ordered pair)
a. .3x-.2y = 4
b. .4x + .3y = 73/19
d. Find the solution (ordered pair)
a. 7x + 6y = -10
b. -4x + y = 19
Please show work so I can actually learn how to do it!
Thank you!

