Select the curve represented by the parametric equations.
?
?
A. ?
?
B. ?
C. ?
D. ?
E. ?
Answer: E
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Solve the problem. Round your answer, if appropriate.Boyle's law states that if the temperature of a gas remains constant, then PV = c, where 
, 
, and c is a constant. Given a quantity of gas at constant temperature, if V is decreasing at a rate of 10 in. 3/sec, at what rate is P increasing when P = 20 lb/in.2 and V = 70 in.3? (Do not round your answer.)
A. 
lb/in.2 per sec
B. 
lb/in.2 per sec
C. 140 lb/in.2 per sec
D. 35 lb/in.2 per sec
Determine the specific solutions (if any) to the equation on the interval [0, 2?).cos 2? = 
A. 0, 
, ?, 
B. 
, 
, 
, 
C. no solution
D. 
, 
, 
, 
Select the smaller of the two given numbers.?10 - 1?, ?6 - 4?
A. ?10 - 1? B. ?6 - 4?
Write the number in standard decimal form.4.28 × 104
A. 171.2 B. 42,800 C. 428,000 D. 4280