Water is draining from a tank. The graph
of f(x), the amount of water in the tank,
in gallons, as a linear function of x, the
number of hours water has been draining,
passes through the points (20, 0) and
(0, 80). What is the rate of change in f(x)
with respect to x?

Refer to interactive solution 17.45 to review a method by which this problem can be solved. the fundamental frequencies of two air columns are the same. column a is open at both ends, while column b is open at only one end. the length of column a is 0.504 m. what is the length of column b?

Write numerical coefficient of y² in the expression 2x² - 15xy – 7y²

Which of the following pairs of functions are inverses of each other? o a. f(x)=x72+8 and 96-9 = 7/x+2) =8 o b. f(x)= 6(x - 2)+3 and g(x) - *#2-3 o c. $4) = 5(2)-3 and 90- 4*: 73 o d. f(x) = 6)-12 and 910 – +12