Solve the problem.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 375 seconds with an average speed of 4 feet per second. Find the average speed of the swimmer if it takes 500 seconds to finish the race.
A. 5 ft/sec
B. 3 ft/sec
C. 2 ft/sec
D. 4 ft/sec
Answer: B
Mathematics
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Solve the initial value problem and leave the solution in implicit form.y'(x) = 
, y(-4) = -4
A. y2 + 22y = 14x - x2 B. 2y2 + 11 = 7x - 2x2 C. y2 + 22 = 14x - x2 + 32 D. y2 + 121y = 49x - x2 - 8
Mathematics
Find the product.(x - 6)(x + 9)
A. x2 + 2x - 54 B. x2 + 3x - 54 C. x2 - 54x + 3 D. x2 + 3x + 2
Mathematics
Find the x-intercepts of the graph of each equation.y = 10x2 + 31x + 15
A. 
, 
B. 
, 
C. 
, 
D. 
, 
Mathematics
Solve the problem.The following scatter diagram shows heights (in inches) of children and their ages.Height (inches)
Age (years)What is the expected height range for a 2-year old child?
A. 20-30 inches B. 35-45 inches C. 25-38 inches D. 40-50 inches
Mathematics