Solve the problem.The volume of water added to a circular drum of radius r is given by Vw = 50t, where Vw is volume in cu ft and t is time in sec. Find the depth of water in a drum of radius 2 ft after adding water for 3 sec. (Round result to one decimal place.)
A. 3.4 ft
B. 23.8 ft
C. 11.9 ft
D. 37.4 ft
Answer: C
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Find an equation of the tangent line at the indicated point on the graph of the function.y = f(x) = x - x2, (x, y) = (-1, -2)
A. y = 3x + 1 B. y = -x - 1 C. y = -x + 1 D. y = -3x + 1
Multiply, and then simplify if possible. Assume all variables represent positive real numbers.
2
A. 3x - 10
+ 23
B. 3x + 25
+ 25
C. 3x + 25
+ 23
D. 3x - 10
+ 25
Solve the equation.(x + 8)(x2 - 16x + 63) = 0
A. {-8, 7, 9} B. {8, -7, -9} C. {-8} D. {8}
Solve the problem.There are five brands of a product on the market, three of which have very loyal customers who never change brands. The transition matrix for the five brands is shown below (where the brands are labeled A, B, C, D, and E). About how many times, on average, will a person currently using brand C use brand D before trying one of the brands that have loyal followings? Round your answer to the nearest hundredth.ABCDE
A. 1.23 B. 0.34 C. 1.19 D. 0.20