Question 163505
The first three problems are correct.

4. x=# of pounds of cashews
50-x=# of pounds of brazil nuts.

5(50-x)+6.75x=5.70(50)

250-5x+6.75x=285

add the x terms to simplify

250+1.75x=285

Subtract 250 from both sides

1.75x=35

Divide both sides by 75

x=20

Let's check our answer
5(30)+6.75(20)=285

150+135=285

5x - 7y = 35
Subtract 5x from both sides

-7y=35-5x

Divide both sides by -7

y=-5+(5/7)x*[invoke describe_linear_equation 5, -7, 35]


the y intercept is (0,-5)
The x intercept is  (0,7)