Solve the problem.The number of acres in a landfill decreases according to the function B = 6200e-0.03t, where t is measured in years. How many acres will the landfill have after 5 years?
A. 4389 acres
B. 11,762 acres
C. 5108 acres
D. 5336 acres
Answer: D
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Express the number in scientific notation.0.000315
A. 3.15 × 10-3 B. 3.15 × 104 C. 3.15 × 10-4 D. 3.15 × 10-5
Explain how to obtain the graph of the second function from the graph of the first function, or state that the graphs are identical.y = cos x, y = cos 
A. The graphs are identical.
B. Reflect the graph over the y-axis, and then translate it 
to the left.
C. Reflect the graph over the y-axis, and then translate it 
to the right.
D. Reflect the graph over the x-axis, and then translate it 
to the left.
Solve.Mr. Alvarez grosses $500 a week. If his take-home pay is $412.64, how much money was deducted from his gross weekly pay?
A. $88.36 B. $87.46 C. $88.46 D. $87.36
Evaluate.10C7
A. 302,400 B. 720 C. 120 D. 12