Add or subtract and write the resulting polynomial in descending order of degree.
- 
A. 
t3 + 
t2 - 
B. 
t3 + 
t2 - 
C. 
t3 + 
t2 - 
D. 
t3 + 
t2 + 
Answer: B
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Find the cardinal number of the set.The numbers in the Venn Diagram below represent cardinalities.
Find n(A' ? B' ? C)
A. 14 B. 21 C. 27 D. 13
Write the first five terms of the geometric sequence satisfying the given conditions.a = 128, r = - 
A. -128, 64, -32, 16, -8 B. 128, -64, 32, -16, 8 C. -64, 32, -16, 8, -4 D. 128, 64, 32, 16, 8
Solve the equation.6x2 + 7x + 1 = 0
A. - 
, 1
B. 
, 1
C. - 
, -1
D. 
, -1
Solve the problem.Assume that the sales of a certain appliance dealer are approximated by a linear function. Suppose that sales were $6000 when the dealer opened five years ago and $84,000 this year. Let x = 0 represent the year the dealer opened. Find the equation giving yearly sales y.
A. y = 15,600x + 6000 B. y = 78,000x + 84,000 C. y = 15,600x + 84,000 D. y = 78,000x + 6000