Determine where the graph of the function f(x) = 
? 6x is concave upward and where it is concave downward. Also, find all inflection points of the function.
What will be an ideal response?
CU on (0, ?), CD on (??, 0),
IP (0, 0)
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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?
Add or subtract as indicated. Write the answer in simplest form.
- 
- 
A. - 
B. 
C. - 
D. 
Write the augmented matrix for the system. Do not solve. 2x + 3z = 22 -2y + 2z = 20 6x + 4y + 3z = 10
A. 
B. 
C. 
D. 
Find the general nth term of the given arithmetic sequence.-1, 1, 3, 5, 7, . . .
A. an = 2n - 3 B. an = -1 + (2)n-1 C. an = 3n - 2 D. an = n + 2