Solve the equation. + 8 = 12

A. {-54}
B. {54}
C. {-52}
D. {52}

Answer: D

Mathematics

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Complete.10 gal =    qt

A. 80 B. 160 C. 40 D. 5

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Solve the problem.A camera costs $350. If the sales tax rate is 8%, how much tax is charged and what is the total price? Round your answers to the nearest cent.

A. $24.50, $374.50 B. $28.00, $378.00 C. $31.50, $381.50 D. $280.00, $630.00

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Mathematics

Use even and odd properties of the trigonometric functions to find the exact value of the expression.cos 

A. - 
B.
C.  
D. - 

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Solve the problem involving modeling with polynomial functions.The bar graph shows the number of personal checks written (in millions) during the years 1981 (x = 1), through 1987 (x = 7).  (a) Use the polynomial-fitting capability of a calculator to determine a quadratic function that best fits these data.(b) Repeat part (a) for a cubic function.

A. (a) y ? -1.86x3 + 21.5x2 - 130.353175x + 743.857143
(b) y ? 3.049242x4 - 50.648989x3 + 285.041667x2 - 677.474387x + 1088.857143
B. (a) y ? -0.8x2 - 54.047619x + 676.857143; 
(b) y ? -1.86x3 + 21.5x2 - 130.353175x + 743.857143
C. (a) y ? -0.8x2 - 55.714286x + 621.976190; 
(b) y ? -1.86x3 + 15.91x2 - 92.936508x + 633.1428571
D. (a) y ? -0.8x2 - 55.714286x + 621.976190; 
(b) y ? - 50.648989x3 + 285.041667x2 - 677.474387x + 1088.857143

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Mathematics