State whether the function is a polynomial function or not. If it is, give its degree. If it is not, tell why not.f(x) = 1 - 
A. No; x is raised to the negative 6 power
B. Yes; degree 6
C. Yes; degree 
D. Yes; degree -6
Answer: A
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Solve the problem.A tank initially contains 100 gal of brine in which 40 lb of salt are dissolved. A brine containing 
of salt runs into the tank at the rate of 4 gal/min. The mixture is kept uniform by stirring and flows out of the tank at the rate of 3 gal/min. Find the solution to the differential equation that models the mixing process.
A. y = 2(100 + t) - 
B. y = 2(100 + t) - 
C. y = 4(50 + t) - 
D. y = 4(50 + t) - 
Find the exact value of the trigonometric expression without the use of a calculator.cos
A. 
B. 
C. 
D. 
Solve the formula for the specified variable.I = prt for t
A. t = pr - I
B. t = I - pr
C. t = 
D. t = 
A model rocket has upward velocity 
, t seconds after launch. Use a Riemann sum with n = 10 to estimate how high the rocket is 4 seconds after launch.
?
A. 1094.4 feet B. 921.6 feet C. 1478.4 feet D. 1267.2 feet E. 960 feet