A sociologist has found that the number of serious crimes in a certain city each year is described by the function 
, where x (in cents/dollar deposited) is the level of reinvestment in the area in conventional mortgages by the city's ten largest banks.
?
Use differentials to estimate the change in the number of crimes if the level of reinvestment changes from 18
/dollar deposited to 26/dollar deposited. Round to the nearest integer.
?
A. Decrease of 60 crimes/yr.
B. Decrease of 24 crimes/yr.
C. Decrease of 56 crimes/yr.
D. Decrease of 57 crimes/yr.
Answer: B
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Solve the problem.What will be the amount in an account with initial principal $7000 if interest is compounded continuously at an annual rate of 7.25% for 8 years?
A. $12,502.27 B. $5521.38 C. $7526.35 D. $7000.00
Multiply.(n + 10)2
A. n2 + 100 B. 100n2 + 20n + 100 C. n + 100 D. n2 + 20n + 100
Write the percent as a fraction or mixed number in simplest form.10%
A. 1
B. 
C. 
D. 
Solve the equation and check your solution.-x = - 
A. x = 
B. x = - 
C. x = - 
D. x = 