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. $67,500
B. $22,500
C. $30,000
D. $202,500
Answer: C
Mathematics
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A. t = –47 B. t = –55 C. t = –46 D. t = –41 E. t = –39
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Graph the equation.y2 = 16x
A. 
B. 
C. 
D. 
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Use a method of your choice to solve the equation.x2 - 1 = 
A. x = -2.37 or x = 3.37 B. x = -3.37 or x = 2.37 C. x = 0 D. x = -2.87 or x = 2.87
Mathematics
Find the period and amplitude of the function 
.
?
?
A. Period: 2?; Amplitude: 3
B. Period: 2?; Amplitude: 
C. Period: 2; Amplitude: 
D. Period: 4; Amplitude: 3
E. Period: 4; Amplitude: 
Mathematics