A tank of water was drained at a constant rate. The table shows the number of gallons of water left in the tank after being
drained for two amounts of time.
(a)
Draining Time (minutes)
Water in Tank (gallons)
450
10
30
330
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Part A
What is the rate at which the water was drained from the tank?
A 6 gallons of water per minute
B 11 gallons of water per minute
45 gallons of water per minute
120 gallons of water per minute

A.) 3.2 pounds package has a shipping cost of $4.13. We can't use the cost assigned to 3 lbs because the package is over 3 lbs but it is not over 4 lbs so we use the cost of 4lbs.

b) It is better to use a line graph where x values represent the weight in pounds and the y values represent the cost.

c) f(x) = 2.69 + 0.48(x-1)

d) domain is the x values; range is the y values