Answer:
180 gallons
Step-by-step explanation:
Each hour, 8 gallons were lost. Thus, in 6 hours,
6 * 8 = 48 gallons were lost
After 6 hours, 132 gallons remained, so before this 6 hours, there were more 48 gallons in it. Thus,
Original amount was 132 + 48 = 180 gallons
Originally, 180 gallons of water was in the pool
.
y — yı = m(x – xı) equation of a line
Points A(1,3) and B(2,1)
Slope (m) = (y2 – y1) / (x2 – x1)
(1 –3) / (2 – 1)
–2/1
–2
Thus, y –3 = –2 (x – 1)
y – 3 = –2x + 2
y –3 + 3 = –2x + 2 + 3
y = –2x + 5
1 8/9
4 1/9 + 1 8/9=6 ........
3 tons + 600 lbs = 6600 lbs