Find all rational zeros of f. Then (if necessary) use the depressed equation to find all roots of the equation f(x) = 0.f(x) = x5 + 5x4 - 6x3 - 30x2 + 8x + 40
A. {-5, -2, 2, -
, 
}
B. {-2, 0, 2, -
, 
}
C. {-5, -2, 0, 2, 
}
D. {-2, 2, 5, -
, 
}
Answer: A
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?Joe changes his socks twice a day. He has 54 socks, all of the same design and color in his sock drawer. If he uses all the socks in his drawer, will he have perfect enough socks for a given number of day? ?
A. ?yes, 2 divides 54. B. yes, 4 socks a day over 13 days uses up all the socks. C. ?no, 4 does not divide 54, since he needs 4 socks every day. D. ?yes, 2 divides 54, since he needs two pairs of socks a day. E. ?no, 4 does not divide 54, and he will need socks for 13 days. He will run out before then.
Find the limit if it exists.
5x(x + 4)(x - 2)
A. -240 B. 480 C. -2400 D. -480
Use problem solving strategies to solve the problem.There is a number between 2 and 8, such that if you raise any of the remaining numbers to the power of this number, the units digit of the result will always be equal to the base. What is the number?
A. 7 B. 3 C. 5 D. 2
Solve the equation.10 - 
= 5
A. 
B. {-5, 5}
C. 
D. no real solution