Determine the principal value without using a calculator.- 
A. Not a real number
B. - 
C. 
D. - 
Answer: D
Mathematics
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Solve.There are currently 56 million cars in a certain country, increasing exponentially by 2% annually. How many years will it take for this country to have 68 million cars? Round to the nearest year.
A. 4 yr B. 10 yr C. 6 yr D. 124 yr
Mathematics
Using the variable x, write the interval as an inequality.[-5, 9)
A. x < 9 B. -5 ? x < 9 C. -5 ? x ? 9 D. -5 < x ? 9
Mathematics
Multiply and simplify.
A. 
B. 
C. 
D. 
Mathematics
Use the sum-to-product formulas to rewrite the sum or difference as a product.
?
?
A. ?
B. ?
C. ?
?
D. ?
E. ?
Mathematics