Find a polynomial function of lowest degree with rational coefficients that has the given numbers as some of its zeros. 2, -8, 3 + 2i
A. f(x) = x4 - 5x3 - 4x2 + 87x - 208
B. f(x) = x4 - 43.5x2 + 174x - 208
C. f(x) = x4 - 5x3 + 4x2 - 87x + 208
D. f(x) = x4 - 39x2 + 174x - 208
Answer: D
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5.48 - 4.12x - 1.2x = 18.78
A. {3.5} B. {-4.56} C. {-2.5} D. {6.43}
Secret messages can be encoded by using a code and an encoding matrix. If we have the code:
and an encoding matrix E, we can encode a message by taking every two letters of the message, converting them to their corresponding numbers, creating a 2 × 1 matrix, and then multiplying each two numbers by E. The message may be unscrambled with a decoding matrix which is the inverse of the coding matrix, E-1. Determine if the given pair of encoding matrices are inverses of each
other.
and 
What will be an ideal response?
Solve the problem.A stocker at a grocery store has created a display of stacked cans such that the top row contains 2 cans, the second row contains 3 cans, the third row contains 4 cans, and so on for six rows. Write the finite series of this sequence, and find the total number of cans in the display.
A. 2 + 3 + 4 + 5 + 6 + 7; 27 cans B. 2 + 3 + 4 + 5 + 6 + 7; 17 cans C. 3 + 4 + 5 + 6 + 7 + 8; 33 cans D. 3 + 4 + 5 + 6 + 7 + 8; 23 cans
Find the value of the expression without using a calculator.log5
A. 1 B. 0 C. -1 D. 5