Solve the problem.Bill can row 3 mph in still water. It takes him 3 hours 36 minutes to go 3 miles upstream and return. Find the speed of the current.
A. 2 mph
B. 1.5 mph
C. 3 mph
D. 2.5 mph
Answer: A
Mathematics
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Find the vector projv u.v = 3i - j + 3k, u = 2i + 10j + 11k
A. 
i - 
j + 
k
B. 
i + 
j + 
k
C. 
i - 
j + 
k
D. 
i + 
j + 
k
Mathematics
Use the definition to find an expression for the instantaneous acceleration of an object moving with rectilinear motion according to the given function. The instantaneous acceleration is defined as the instantaneous rate of change of the velocity with respect to time. v = 4t2 - 7t + 1[v is the velocity]
A. 8t - 7 B. 8t2 - 7t C. 4t - 7 D. 4t2 - 7
Mathematics
Determine whether the sequence is arithmetic.1, -3, 9, -27, 81, . . .
A. Arithmetic B. Not arithmetic
Mathematics
Factor completely.4x3 + 4x2 - 48x
A. (x - 3)(4x2 + 16) B. (4x2 + 12x)(x - 4) C. 4x(x + 3)(x - 4) D. 4x(x - 3)(x + 4)
Mathematics