Solve.Melissa invested a sum of money at 3% annual simple interest. She invested three times that sum at 5% annual simple interest. If her total yearly interest from both investments was $5400, how much was invested at 3%?
A. $202,500
B. $67,500
C. $30,000
D. $22,500
Answer: C
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Find an equation for the line tangent to the curve at the point defined by the given value of t.x = sin t, y = 6 sin t, t = 
A. y = 6x + 
B. y = -6x + 6
C. y = 6x - 6
D. y = 6x
Express the area of the region bounded by the given line(s) and/or curve(s) as an iterated double integral.The curves 
and 
A. 
B. 
C. 
D. 
Answer the question.How you would find the empirical probability of rolling a 5 on a die?
A. Roll a die 6 times and then find the relative frequency of rolling a 5. The relative frequency would be obtained by dividing the number of times a 5 has occurred by 6. B. Roll a die many times and then find the relative frequency of rolling a 5. The relative frequency would be obtained by dividing the number of times a 5 has occurred by the total number of times the die was tossed. C. Roll a die 1 time and then find the relative frequency of rolling a 5. The relative frequency would be obtained by dividing the number of times a 5 has occurred by 1. D. The empirical probability cannot be determined.
Perform the operations indicated. Write your answer in simplest form.
A. -9 B. Undefined C. 0 D. 9