Use Descartes's Rule of Signs to determine the possible number of positive and negative real zeros for the given function.f(x) = 3x7 - 5x4 + x + 10
A. 2 or 0 positive zeros, 2 or 0 negative zeros
B. 3 or 1 positive zeros, 3 or 1 negative zeros
C. 2 or 0 positive zeros, 1 negative zero
D. 2 or 0 positive zeros, 1 or 0 negative zeros
Answer: C
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Solve the problem.The decay of 356 mg of an isotope is given by A(t) = 356e-0.019t, where t is time in years. Find the amount left after 89 years.
A. 33 mg B. 66 mg C. 349 mg D. 64 mg
Determine the specific solutions (if any) to the equation on the interval [0, 2?).cos 2? = 
- cos 2?
A. 
, 
, 
, 
B. 
, 
, 
, 
C. no solution
D. 0, 
, ?, 
Match the graph to the function listed whose graph most resembles the one given.
A. absolute value function B. square function C. reciprocal function D. square root function
Find the perimeter of the figure.
A. 104 km B. 112 km C. 56 km D. not enough information given