Solve the problem.The cumulative number (in thousands) of deaths from a certain disease from 2000 to 2010 may be modeled by 
where x = 0 corresponds to 2000, x = 1 to 2001, etc. Use the formula for A to estimate symbolically the year when the total number of deaths reached 150 thousand.
A. 2009
B. 2007
C. 2010
D. 2008
Answer: B
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Solve the problem.Approximately 4 × 103 employees of a certain company average $30,000 each year in salary. Write the total amount earned by all the employees of this company per year in scientific notation.
A. $1.2 × 109 B. $1.2 × 108 C. $12 × 109 D. $12 × 108
Solve the problem.Yvonne and Malena spent three weeks one summer traveling around to different national and state parks. They drove a total of 1263.6 miles and used 40.5 gallons of gas. How many miles per gallon did they get on the trip? Round to the nearest tenth.
A. 31.7 mpg B. 29.9 mpg C. 32.3 mpg D. 31.2 mpg
Solve the equation.b(b + 11) = 0
A. {11, 0} B. {1, -11} C. {-11, 0} D. {-1, -11}
The graph of a function f is given. On the same axes, sketch the graph of f-1. 
A. 
B. 