Solve.The amount of water used to take a shower is directly proportional to the amount of time that the shower is in use. A shower lasting 24 minutes requires 9.6 gallons of water. Find the amount of water used in a shower lasting 5 minutes.
A. 12.5 gallons
B. 2 gallons
C. 1.92 gallons
D. 46.08 gallons
Answer: B
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Factor: 24a2b2 - 28ab + 36ab2
a. 12ab(2ab + 3b - 2) b. 12ab(12ab + 18 - 14) c. 6ab(4ab + 6b - 14) d. 3ab(8ab + 12b - 9) e. 4ab(6ab + 9b - 7)
Solve the problem.The growth model 
represents the population of a species introduced into a new territory after t years. What will the population be in 30 years?
A. 998 individuals B. 245 individuals C. 310 individuals D. 237 individuals
Write an equation of the line through the given point with the given slope. Write the equation in slope-intercept form.(4, -3); m = -9
A. y = -9x + 33 B. y = 9x + 32 C. y = -9x + 31 D. y = -9x + 34
Solve the problem.A boat goes 160 miles downstream in the same time it can go 120 miles upstream. The speed of the current is 8 miles per hour. Find the speed of the boat in still water.
A. 28 mph B. 56 mph C. 48 mph D. 64 mph