Perform the indicated operation.4 lb 3 oz × 9
A. 13 lb 11 oz
B. 37 lb 11 oz
C. 36 lb 3 oz
D. 36 lb 11 oz
Answer: B
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Find the magnitude and direction angle (to the nearest tenth) for each vector. Give the measure of the direction angle as an angle in [0,360°].
A. 100; 270° B. 10; 180° C. 10; 270° D. 10; 90°
Write the number in scientific notation.0.00009458
A. 9.458 × 10-5 B. 9.458 × 105 C. 9.458 × 104 D. 9.458 × 10-4
Solve the problem. The following data shows the number of housing starts in various years in one beachside community. 
Let f(t) be the number of housing starts at t years since 2009. The data can be modeled by the quadratic model 
. Use the model to predict the number of housing starts in the year 2021.
A. 102 B. 97 C. 104 D. 100
Express as a difference of logarithms.log8 
A. log8 1 - log8 2 B. log8 1 + log8 2 C. log8 2 - log8 1 D. log4 1 - log4 2