Solve.The amount of time it takes a swimmer to swim a race is inversely proportional to the average speed of the swimmer. A swimmer finishes a race in 60 seconds with an average speed of 5 feet per second. Find the average speed of the swimmer if it takes 75 seconds to finish the race.
A. 3 feet per second
B. 4 feet per second
C. 5 feet per second
D. 6 feet per second
Answer: B
Mathematics
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Use the given functions to find the requested function.f(x) = 3x - 7, g(x) = 6x - 3Find f - g.
A. 9x - 10 B. 3x + 4 C. -3x - 10 D. -3x - 4
Mathematics
Determine whether the matrix is in row-echelon form. If it is, then determine also whether it is in reduced row-echelon form.
A. Yes; yes B. Yes; no C. No
Mathematics
A manufacturer estimates the Cobb-Douglas production function to be given by
?
.
?
Estimate the production levels when 
and 
.
?
A. 135,540 units
B. 122,560 units
C. 131,601 units
D. 145,330 units
E. 112,745 units
Mathematics
Solve the equation.16x - 5 - 12x = 31
A. {7} B. {10} C. {12} D. {9}
Mathematics