Solve the problem.The following points form a quadratic relationship: (1, 5.0), (2, 4.4), (3, 4.3), (4, 4.2), (5, 4.6), (6, 4.8), (7, 5.4), (8, 6.2) . The x-coordinates are the years a particular company has been in operation and the y-coordinates are the profit, in millions, for that year. Find the quadratic function that models the profit in millions as a function of x, the number of years of operation. Round to three decimal places.
A. y = 0.203x2 - 0.945x + 7.098
B. y = - 0.003x2 + 0.145x - 0.892
C. y = 0.099x2 + 1.254x - 3.512
D. y = 0.101x2 - 0.723x + 5.552
Answer: D
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Without graphing the function, determine its amplitude or period as requested.y = -2 sin xFind the amplitude.
A. -2?
B. 
C. 2
D. 2?
Multiply and express the product in lowest terms.
? 
A. 
B. 
C. y2
D. 
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
A rumor is spread by word of mouth to a potential audience of 3000 people. After t days, 
people will have heard the rumor. The graphs are shown below. 
At what rate will the rumor be spreading when half of the potential audience has heard the rumor? Enter just an integer rounded to the nearest hundred (no units).
Fill in the blank(s) with the appropriate word(s).