Determine whether the given equation is a rational function.f(x) = 1 + 
A. No
B. Yes
Answer: B
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Find all solutions of the equation in the interval [0, 2?).(tan ? - 
)(sin ? + 1) = 0
A. 
B. 
C. 
D. 
The Acme Class Ring Company designs and sells two types of rings: the VIP and the SST. They can produce up to 24 rings each day using up to 60 total man-hours of labor. It takes 3 man-hours to make one VIP ring, versus 2 man-hours to make one SST ring.How many of each type of ring should be made daily in order to maximize the company's profit, if the profit on a VIP ring is $40 and the profit on an SST ring is $30?
A. 14 VIP and 14 SST B. 12 VIP and 12 SST C. 10 VIP and 14 SST D. 14 VIP and 10 SST
Solve the problem.The energy cost of a speed burst as a function of the body weight of a dolphin is given by 
where w is the weight of the dolphin (in kg) and E is the energy expenditure (in kcal/kg/km). Suppose that the weight of a 
dolphin is increasing at a rate of 4.5 kg/day. Find the rate at which the energy expenditure is changing with respect to time.
A. -11.0225 kcal/kg/km/day B. -0.0014 kcal/kg/km/day C. -0.0064 kcal/kg/km/day D. -2.8746 kcal/kg/km/day
Solve the problem.If P = (-6, -9) and Q = (x, -105), find all numbers x such that the vector represented by 
has length -120.
A. {66, -78} B. {66, -84} C. {78, -78} D. {78, 66}