Answer:
(4,2),(5,−3),(−1,7),(0,9)
Step-by-step explanation:
Answer:

point slope form....
y - (-7) = -1/2(x-4)
y + 7 = -x/2 + 2
2y + 14 = -x + 4
2y = -x -10
y = -1/2 x - 5
Step-by-step explanation:
Answer:
7.0 < x < 7.6
X is the ideal pH of the swimming pool
Answer:
1.65 minutes
Step-by-step explanation:
10 9/10 + 5 3/5 = 16 1/2
16 1/2 divided by 20 = 1.65 or 33/20
C=18*13
C=234
You just have to multiply