Find the equation of the line passing through the indicated two points. Write the equation in slope-intercept form.(8, 7) and (-8, 7)
A. y = 4x - 37
B. y = 7
C. y = 12x - 101
D. y = 3x - 29
Answer: B
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Find the tax in the following application problems. Use $4050 for each personal deduction, a standard deduction of $6300 for single taxpayers, $12,600 for married taxpayers filing jointly, $6300 formarried taxpayers filing separately, and $9300 for head of household and the tax rate schedule.
Mark Collins had an adjusted gross income of $26,741 last year. He had deductions of $899 for state income tax, $555 for property tax, $2,824 in mortgage interest, and $221 in contributions. Collins claims one exemption and files as a single person.
A. $3,631.30 B. $1,311.15 C. $1,994.90 D. $2,356.30
Solve the problem.In one study, a type of fish was exposed to a toxin. The table lists toxin concentrations in the fish after a certain number of hours. The concentration C of the toxin in the fishes' bloodstream was measured in micrograms of toxin per gram of fish after x hours of exposure. 
(i) Describe the relationship between x and C; (ii) Use regression to find a cubic polynomial function f(x) that models the data; (iii) graph C and the data; (iv) Concentrations above 30 are lethal to the fish. Determine how many hours of exposure it takes for this to occur.
A. (i) As x increases, C increases;
(ii) f(x) ? 0.38x3 - 4.35x2 + 22.97x - 33.40
(iii)
(iv) x ? 6.0 (approximately)
B. (i) As x increases, C increases;
(ii) f(x) ? 0.38x3 - 5.35x2 + 24.97x - 33.40
(iii)
(iv) x ? 9.1 (approximately)
C. (i) As x increases, C increases;
(ii) f(x) ? 0.28x3 - 5.35x2 + 22.97x - 33.40
(iii)
(iv) x ? 6.2 (approximately)
D. (i) As x increases, C increases;
(ii) f(x) ? 0.28x3 - 4.35x2 + 24.97x - 33.40
(iii)
(iv) x ? 7.9 (approximately)
Graph the inequality.y ? x2 + 2x + 4 
A. 
B. 
C. 
D. 
Convert the units using unit fractions.8 wk = 
days
A. 56 B. 480 C. 192 D. 112