The letters r and ? represent polar coordinates. Write the equation using rectangular coordinates (x, y).r = 1 + 2 sin ?
A. x2 + y2 = 
+ 2y
B. 
= x2 + y2 + 2x
C. 
= x2 + y2 + 2y
D. x2 + y2 = 
+ 2x
Answer: A
Mathematics
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A. 7x2 + 36x + 2
B. 7x + 4 + 
C. 63x2 + 36x + 2
D. 7x2 + 4x + 
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A. 15.9°C B. -20.2°C C. -33.9°C D. -109.8°C
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Write an equation for the line described. Give your answer in slope-intercept form.m = -4, b = 8
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Write fraction in lowest terms.Timmy has saved 100 coins in his piggy bank. 60 coins are dimes. What fraction of the coins saved are dimes?
A. 60
B. 
C. 
D. 
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