Use a graphing calculator or computer graphing software to solve the problem (correct to one decimal place).Find the absolute minimum value for the function f(x) = x2 + 5x + 4.9 over the interval [0, ?).
A. 5.6
B. 4.6
C. 5.3
D. 4.9
Answer: D
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Perform the indicated operations. Write the result using only positive exponents. Assume all variables represent nonzero real numbers.
A. - 
B. 
C. -3ab2
D. 
Solve the problem.A standard train ticket in a certain city costs 
per ride. People who use the train also have the option of purchasing a frequent-rider pass for 
each month. With the pass, a ticket costs only
per ride. How many train rides in a month make the frequent-rider pass a better deal than standard train tickets?
A. 24 or more rides B. 26 or more rides C. 25 or more rides D. 27 or more rides
Use the unit circle to determine the value of the given expression or state that it is undefined.sec (-90°)
A. 0 B. -1 C. undefined D. 1
Find any numbers for which the rational expression is undefined.
A. x = 2, x = 5 B. x = -2, x = -5 C. x = 6, x = -6 D. x = 0