Use the unit circle to determine the value of the given expression or state that it is undefined.tan 
A. 0
B. undefined
C. 1
D. -1
Answer: B
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Solve the problem.The annual population density of a species of insect after n years is modeled by a sequence. Suppose that the initial density of insects is 624 with r = 0.8. Write a recursive sequence that describes this data, where an denotes the insect density during year n.Find the terms a1 , a2 , a3 , ...... until you are able to interpret the results.
A. The population density increases by 20% each year. B. The population density decreases by 20% each year. C. The population density increases by 80% each year. D. The population density decreases by 80% each year.
Work the chain multiplication.(20)(10)(80)
A. 16,100 B. 15,900 C. 16,000 D. 15,990
Factor as completely as possible. If unfactorable, indicate that the polynomial is prime.
A. (x - 9)(x + 5) B. (x + 9)(x - 5) C. (x - 9)(x - 5) D. (x + 9)(x + 5)
Identify the coefficient of the given term.-7y2
A. 7 B. 2 C. y2 D. -7