Combine like terms. Then write the polynomial in descending order of powers.5x8 + 9x2 - 8x8
A. Cannot be simplified
B. -3x8 + 9x2
C. 6x18
D. 6x2
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 620 with r = 1.9. Write a recursive sequence that describes this data, where an denotes the insect density during year n.Find the terms a1 , a2 , a3 , ...., a5 . Round to two decimal places, if necessary.
A. a1 = 1178.00, a2 = 2238.20, a3 = 4252.58, a4 = 8079.90, a5 = 15,351.81 B. a1 = 620, a2 = 62.00, a3 = 6.20, a4 = 0.62, a5 = 0.06 C. a1 = 620, a2 = 1178.00, a3 = 2238.20, a4 = 4252.58, a5 = 8079.90 D. a1 = 620, a2 = 620, a3 = 620, a4 = 620, a5 = 620
Round each number to the nearest hundred to estimate the sum or difference.265 + 135
A. 130 B. 100 C. 200 D. 400
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
Solve the equation.5x = 625
A. {5} B. {125} C. {3} D. {4}