Use a sum or difference identity to find the exact value.
A. - 
B. -2
C. - 
D. - 
Answer: A
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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 15 in. 3/sec, at what rate is P increasing when P = 40 lb/in.2 and V = 50 in.3? (Do not round your answer.)
A. 
lb/in.2 per sec
B. 
lb/in.2 per sec
C. 
lb/in.2 per sec
D. 12 lb/in.2 per sec
Provide an appropriate response.
Which two lines are parallel? 
A. 
and 
B. 
and 
C. 
and 
D. 
and 
Factor the polynomial by removing the common monomial factor. 42x8y7 + 30x2y5 + 36x6y2
A. 6(7x8y7 + 5x2y5 + 6x6y2) B. 6x2(7x6y7 + 5y5 + 6x4y2) C. 6x2y2(7x6y5 + 5y3 + 6x4) D. x2y2(42x6y5 + 30y3 + 36x4)
Evaluate f(x) at the given x. Approximate the result to the nearest hundredth.f(x) = x1.72 - x2.10, x = 2.11
A. -1.64 B. 0.07 C. -1.19 D. 0.11