Determine the rectangular equation of the curve whose parametric equations are given.x = 7 cos t, y = 7 sin t; 0 ? t ? 2?
A. x2 + y2 = 7; -7 ? x ?7
B. x2 - y2 = 7; -7 ? x ?7
C. x2 - y2 = 49; -7 ? x ?7
D. x2 + y2 = 49; -7 ? x ?7
Answer: D
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Find the standard form of the equation of a circle that satisfies the given conditions.Center at (-10, 0); radius 8
A. x2 + (y + 10)2 = 8 B. (x + 10)2 + y2 = 64 C. x2 + (y - 10)2 = 8 D. (x - 10)2 + y2 = 64
Perform the indicated operation.
A. 2x5 + 8x4 + 12x3 - 5 B. 8x5 - 2x4 - 2x3 + 11 C. 8x5 - 2x4 - 2x3 - 5 D. 2x5 - 2x4 - 2x3 + 11
Solve. Write the fraction in simplest form.Alt walked 
mile to his biology class, 
mile to his art class, 
mile to his calculus class, and then back to his dormitory. If he walked 1 mile altogether, how far did he walk from his calculus class to his dormitory?
A. 
mi
B. 
mi
C. 
mi
D. 
mi
Convert the number in the sentence to standard notation.The net worth of a certain business is $36.7 million.
A. $36,007,000 B. $360,007,000 C. $360,700,000 D. $36,700,000