Solve the problem.Mrs. Boyd has a desk full of quarters and nickels. If she has a total of 32 coins with a total face value of $5.40, how many of the coins are nickels?
A. 24 nickels
B. 13 nickels
C. 19 nickels
D. 15 nickels
Answer: B
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Find a Cartesian equation for the parametric equations.x = 5 tan ?, y = 4 cot ?
A. y = 
cos x
B. y = 
sin x
C. xy = 20
D. 
= 20
Solve the problem.A pair of rabbits are introduced on a small island, and the population grows until the food supply and natural enemies of the rabbits on the island limit the population. If the number of rabbits is 
where t is the number of years after the rabbits are introduced, how long does it take for the rabbit population to reach 100?
A. 7 years B. 11 years C. 9 years D. 10 years
Solve the problem.A mechanic is testing the cooling system of a boat engine. He measures the engine's temperature over time. Use a graphing utility to fit a logistic function to the data. What is the carrying capacity of the cooling system?
A. y = 
, 315°F
B. y = 
, 315°F
C. y = 
, 307°F
D. y = 
, 312°F
Answer the question.Which of the other three methods for solving quadratic equations is used to derive the quadratic formula?
What will be an ideal response?