Solve.Find the simple interest when: Principal = $550, Rate = 13.5%, Time = 7 years.
A. $519.75
B. $74.25
C. $5197.50
D. $742.50
Answer: A
Mathematics
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Find the unit tangent vector of the given curve.r(t) = (10 - 2t)i + (2t - 10)j + (4 + t)k
A. T = 
i - 
j - 
k
B. T = - 
i + 
j + 
k
C. T = 
i - 
j - 
k
D. T = - 
i + 
j + 
k
Mathematics
Divide. Simplify, if necessary.
÷ 
A. 39
B. - 
C. - 
D. - 
Mathematics
Match the system of inequalities with the appropriate graph.2x + y ? 4 x - 1 ? 0
A. 
B. 
C. 
D. 
Mathematics
Solve the problem.How many 4-digit numbers can be formed using the digits 0, 1, 2, 3, 4, 5, 6, 7, 8, and 9 if the first digit cannot be 0? Repeated digits are allowed.
A. 3024 B. 6561 C. 6480 D. 9000
Mathematics