Answer:
12
Step-by-step explanation:
560/800 = 0.7 pounds per dollar
1/4
You can set up ratios or fractions for the matching sides.
A/B
1/4 = 1/4
1.1/ 4/4= 1/4
1.5/6 = 1/4
yes
x^2-9x-6=0
Use the quadratic formula to get (9+sqrt(105))/2 or (9-sqrt(105))/2