Suppose that a 1000-L water tank takes 20 min to drain and that after t minutes, the amount of water remaining in the tank is V(t) = 
(20 - t2) liters. What is the average amount of water in the tank during the time it drains?Enter a reduced fraction of form 
(no units)
Fill in the blank(s) with the appropriate word(s).
1000/3
Mathematics
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Find all solutions by factoring.13x2 + 6x = 0
A. 
, 0
B. -6,0
C. 0
D. 
, -6
Mathematics
Find the first term and the common difference.$10, $15, $20, $25, . . .
A. a1 = $10, d =$10 B. a1 = $10, d =$5 C. a1 = $10, d =$15 D. a1 = $10, d = $5
Mathematics
Find the slope-intercept equation of the tangent line to the graph of f at the given point.f(x) = 5x2 + x at (-4, 76)
A. y = 10x + 1 B. y = 10x C. y = -39x - 232 D. y = -39x - 80
Mathematics
Find the line of symmetry.f(x) = x2 - 16x + 64
A. x = 6 B. x = 8 C. x = -6 D. x = -8
Mathematics