Solve the problem.Use the formula A = P(1 + r)2 to find what the rate of interest is if a principal amount of $5500 grows to $6534.55 in 2 years, if interest is compounded annually.
A. 9%
B. 10%
C. 7%
D. 11%
Answer: A
Mathematics
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Simplify the expression by combining like terms. 21.5y + 6.1 - 11.6y - 16.8
A. 10.9x - 10.7 B. -0.8x C. 9.9x + 10.7 D. 9.9x - 10.7
Mathematics
Use a table of values to graph the plane curve defined by the following parametric equations. Find a rectangular equation for the curve.x = 8 sin t, y = 8 cos t, for t in [0, 2?] 
A. 
y = x2 - 9, for x in [-2, 2]
B. 
y = 
= 64, for x in [-8, 8]
C. 
x2 + y2 = 64, for x in [-8, 8]
D. 
y2 - x2 = 64, for x in [-8, 8]
Mathematics
Solve the problem.A circle has a circumference of 36? meters. What is the radius of the circle?
A. 36 m B. 9 m C. 18 m D. 6 m
Mathematics
Complete the ordered pair for the given equation.(
, 13); 4x + y = 6
A. 
B. 
C. 
D. 
Mathematics