Multiply and simplify any radicals in your answer. Assume that all variables represent positive real numbers.(8x
+ 4
)(8x
- 4
)
A. 64x
+ 32x
+ 16
B. 192x2 - 16x
C. 192x2 - 64x
+ 16x
D. 64x
- 16
Answer: B
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Solve the problem.The Blood Alcohol Concentration (BAC) of a person who has been drinking is given by the formula BAC = 
- (hours of drinking × 0.015).For example, the BAC for a 150-lb man who in two hours has drunk two 12-ounce beers , each having a 3.3 percent alcohol content isBAC = 
- (2 × 0.015).Find the BAC for a 170-lb man who in three hours has drunk 5 12-ounce beers, each having a 3.8 percent alcohol content.
A. 0.067 B. 0.078 C. 0.054 D. 0.056
Determine whether 9 is a factor of the number.11,961
A. Yes B. No
Solve the logarithmic equation. Give an exact answer.log3x = 4
A. {64}
B. {12}
C. 
D. {81}
Find the indicated term of the geometric sequence.8th term of 0.9, 0.09, 0.009, . . .
A. 9e-10 B. 0.00000009 C. 0.0000009 D. 0.00000001