Solve the problem.In the formula N = Iekt, N is the number of items in terms of an initial population I at a given time t and k is a growth constant equal to the percent of growth per unit time. There are currently 69 million cars in a certain country, decreasing by 6.3% annually. How many years will it take for this country to have 51 million cars? Round to the nearest year.
A. 5 yr
B. 46 yr
C. 2 yr
D. 3 yr
Answer: A
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Solve the problem.A solid right circular cylinder is bounded by the cylinder r = 1 and the planes z = 0 and z = 5. Find the moment of inertia about the z-axis if the density is ? = 3z.
A. 
?
B. 
?
C. 25?
D. 
?
Using a calculator, evaluate the trigonometric functions. Round to four significant digits.cos 689°
A. -0.5150 B. 0.9998 C. 0.4848 D. 0.8572
Assume triangle ABC has standard labeling. Determine if AAS, ASA, SSA, SAS, or SSS is given, and decide if the law of sines or the law of cosines should be used to solve the triangle.?, ?, and c
A. SSA; law of sines B. SSA; law of cosines C. SAS; law of cosines D. AAS; law of sines
Graph f. Use the graph to determine whether f is continuous. 
A. Continuous B. Not continuous