Answer:
16) 
17) y = -x - 4
18) y = -2x - 1
19) y = -2x
20)
Step-by-step explanation:
With the two points you find the slope using 
Then using that slope, plug the slope in with one of the points values of x and y into the point slope formula, and smiplify that into the y-intercept formula.
A = cost of 1 drink $12.75 + 4a $12.75 + $12.00 = $24.75
Answer:
1.66 pounds
Step-by-step explanation:
4.98 dollars divided by 3 pounds