Write the word phrase in symbols, using x as the variable.A number subtracted from double the number
A. 2x - x
B. 2x - 2
C. x - 2x
D. 2x
Answer: A
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Solve the problem.A long strip of sheet metal 12 inches wide is to be made into a small trough by turning up two sides at right angles to the base. If the trough is to have maximum capacity, how many inches should be turned up on each side?
A. 4 in. on one side, 5 in. on the other B. 4 in. C. 3 in. D. 6 in.
Solve the problem.The formula D = 8e-0.04h can be used to find the number of milligrams D of a certain drug in a patient's bloodstream h hours after the drug has been given. When the number of milligrams reaches 3, the drug is to be given again. What is the time between injections?
A. 24.52 hrs B. 27.47 hrs C. 25.97 hrs D. 51.99 hrs
Graph the function.y = sec
A. 
B. 
C. 
D. 
Find the slope of the line through the pair of points.(6, -7) and (7, 5)
A. 12
B. 
C. - 
D. - 12