?Find the speed v, in miles per hour, that will minimize costs on a 125-mile delivery trip. The cost per hour for fuel is 
dollars, and the driver is paid 
dollars per hour. (Assume there are no costs other than wages and fuel.)
?
A. ?75 mph
B. ?125 mph
C. ?200 mph
D. 80? mph
E. ?40 mph
Answer: D
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Add and simplify.
+ 
+ 
A. 
B. 
C. 
D. 
Solve the problem. Assume all numbers are approximate unless otherwise stated or the number has been determined by a definition or counting process.The expression 
will tell you how high, in meters, you must raise the hammer of a pile driver when you know the mass (m) of the hammer in kg, and what potential energy (PE) in Joules is required. Find the height to which a 59-kg hammer must be raised to have 1780 J of potential energy.
A. 3.1 m B. 3 m C. 3.079 m D. 3.08 m
Solve the problem.Use Newton's method to estimate the solutions of the equation 
. Start with
for the right-hand solution and with x0 = -2 for the solution on the left. Then, in each case find x2.
What will be an ideal response?
Solve the equation. Round any irrational solutions to the nearest thousandth.x2 - 5x + 2 = 0
A. -4.562, -0.438 B. 4.562, 0.438 C. 2.062, -2.062 D. -9.123, -0.877