Solve.How long will it take for prices in the economy to double at a 7% annual inflation rate? (Round to the nearest year.)
A. 9 yr
B. 23 yr
C. 10 yr
D. 16 yr
Answer: C
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Find all the local maxima, local minima, and saddle points of the function.
A. f(-5, -10) = 2249, local maximum; f(5, 10) = -2251, local minimum
B. f(5, 10) = -2251, local minimum; f(5, -10) = 1749, saddle point; f(-5, 10) = -1751, saddle point; 
local maximum
C. f(-5, -10) = 2249, local maximum
D. f(5, -10) = 1749, saddle point; f(-5, 10) = -1751, saddle point
Use the graph to answer the question. 
What was the increase in sales between month 5 and month 6 of 2007?
A. $800 B. $8000 C. $4 D. $4000
Solve the problem.It costs $20 per hour plus a flat fee of $29 for a plumber to make a house call. After writing an equation for this situation, what is the total cost to have a plumber come to a house for 7 hours?
A. $223 B. $587 C. $169 D. $140
Solve the problem.What principal invested at 6%, compounded continuously for 3 years, will yield $1500? Round the answer to two decimal places.
Fill in the blank(s) with the appropriate word(s).