For the given polar equation, write an equivalent rectangular equation.r = 
A. x2 = 10y - 25
B. x2 = 25 - 10y
C. y2 = 10x - 25
D. y2 = 25 - 10x
Answer: D
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Use rational exponents to write a single radical expression.
A. 
B. 
C. 
D. 
Round your answers to three significant digits. ? A piece of 20 in. × 24 in. metal duct is a rectangular prism. If it is 5 ft long, what is the lateral surface area A? ?
A. A = 450 in. 2 B. A = 400 in. 2 C. A = 4,500 in. 2 D. A = 4,000 in. 2 E. A = 440 in. 2
Find the center of mass of a thin plate of constant density covering the given region.The region between the x-axis and the curve y = 6csc2 x, 
? x ? 
A. 
= 
, 
= 8
B. 
= 
, 
= 4
C. 
= 
, 
= 9
D. 
= 
, 
= 6
A formula is given, along with values for all but one of the variables in the formula. Find the value of the variable that is not given. Round to the nearest hundredth when necessary.P = 2L + 2w; L = 5, w = 7
A. L = 24 B. P = 70 C. P = 24 D. P = 12