Solve the problem.The price of electric guitars has varied considerably in recent years. The data in the table relates the price P, in dollars, to time t, in years. a) Use a graphing utility to find the cubic function of best fit that models the relation between year and the price of an electric guitar. Round all values to three decimal places.b) Use the model found in part (a) to predict the price of an electric guitar in year 10. 
What will be an ideal response?
a) y = -1.503x3 + 16.405x2 - 12.028x + 653.060
b) $670.28
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Determine if the given function can be extended to a continuous function at 
If so, approximate the extended function's value at 
(rounded to four decimal places if necessary). If not, determine whether the function can be continuously extended from the left or from the right and provide the values of the extended functions at 
Otherwise write "no continuous extension."f(x) = (1 + 2x)1/x
A. f(0) = 5.4366 B. f(0) = 2.7183 C. No continuous extension D. f(0) = 7.3891
Factor completely. If a polynomial cannot be factored, say it is prime.x9 - 1
A. (x2 - 1)(x6 + x3 + 1) B. (x3 - 1)(x6 + x3 + 1) C. (x3 + 1)(x6 - x3 - 1) D. (x2 + 1)(x6 - x3 - 1)
Write a signed number for the statement.Losing 13 cents
A. -13¢ B. 13¢
Solve the equation.7x + 3x = 110
A. x = 
B. x = 
C. x = 11
D. x = 100