Write the complex number in rectangular form.9(cos 180° + i sin 180°)
A. 9
B. -9
C. -9i
D. 9i
Answer: B
Mathematics
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Given the current cost of an item and the inflation rate, find the cost of the item in the specified number of years.College tuition: $16,000.00, inflation rate: 2.7%, after 12 years
A. $25,027.50 B. $24,027.50 C. $22,027.50 D. $23,027.50
Mathematics
Use the formula for simple interest, I = P × r × t, to find the missing quantity.I = $1932; P = $6900; t = 4 years
A. r = 8% B. r = 10% C. r = 7% D. r = 9%
Mathematics
Determine the symmetries of the curve.r = 
, ? > 0
A. No symmetry B. y-axis only C. x-axis only D. Origin only
Mathematics
The graph of a logarithmic function is shown. Select the function which matches the graph.
A. y = log2x B. y = 1 - log2x C. y = log2(-x) D. y = -log2x
Mathematics