Simplify the expression. Assume that all variables are positive when they appear.
? 
A. 
B. 
C. 
D. 
Answer: D
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Use the laws of exponents to simplify. Do not use negative exponents in your answer.
A. 72
B. 
C. 714
D. 
Solve the problem.An electric fence must be installed around a wildlife preserve with dimensionsshown in the figure. How many miles of fencing will be needed?
A. 392 mi B. 449 mi C. 372 mi D. 302 mi
Predict the number of tick marks on the positive x - axis and the positive y-axis.[-350, 360, 5] by [-450, 450, 5]
A. 90; 70 B. 70; 90 C. 90; 72 D. 72; 90
Solve.The polynomial 
models natural gas consumption in billions of cubic feet for a certain country during year x, where 
corresponds to 1990, 
to 1991, and so on. Approximately how much gas will be consumed in 2024?
A. 330.8 billion ft3 B. 256.8 billion ft3 C. 46.4 billion ft3 D. 120.4 billion ft3