Solve the problem.A sample of 600 grams of radioactive substance decays according to the function 
where t is the time in years. How much of the substance will be left in the sample after 20 years? Round to the nearest whole gram.
A. 0 g
B. 1 g
C. 244 g
D. 778 g
Answer: C
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Which of the following statements concerning lumpy assets is correct?
A. Purchasing lumpy assets generally does not have a significant effect on the amount of fixed assets a firm holds. B. Lumpy assets normally are extremely liquid. C. If it can only purchase lumpy assets, it is possible that a firm will be required to invest a substantial amount in plant and equipment to attain a small projected increase in sales. D. Lumpy assets can be acquired in small increments. E. Lumpy assets generally have lives that are less than 12 months.
Solve.A company has 63,000 employees. Of these, 
drive alone to work, 
car pool, 
use public transportation, 
cycle, and the remainder use other methods of transportation. How many employees use each method of transportation?
A. Drive alone: 2,100; car pool: 10,500; public transportation: 9,000; cycle: 7,000; 
B. Drive alone: 21,000; car pool: 10,500; public transportation: 9,000; cycle: 7,000; 
C. Drive alone: 21,100; car pool: 10,500; public transportation: 8,900; cycle: 7,000; other: 1000
D. Drive alone: 21,000; car pool: 10,500; public transportation: 9,000; cycle: 7,000; 
Find three ordered pairs that are solutions of the given linear equation, and use them to graph the equation.5y - 45x = -10
A. 
B. 
C. 
D. 
Solve the problem.Sunlight is absorbed by water and so, as one descends into the ocean, the intensity of light diminishes. Suppose that at each depth, going down one more meter causes a 15% decrease in the intensity of sunlight.(a) Write the difference equation for yn, the intensity of the light at a depth of n meters.(b) If the intensity of the light at the surface is 500 units, what is the intensity of the light at a depth of two meters?(c) Graph the difference equation. 
What will be an ideal response?