Tell whether the relation is a function.
A. Function
B. Not a function
Answer: B
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Use the graph to find a ? > 0 such that for all x, 0 < 
< ? ? 
< ?.
A. 0.6446 B. 2.59 C. 0.7696 D. 1.4142
Solve the problem.A certain company has found that its expenditure rate per day (in hundreds of dollars) on a certain type of job is given by 
where x is the number of days since the start of the job. Find the expenditure if the job takes 6 days.
A. $8400 B. $2600 C. $84 D. $26
Write the solutions that can be read from the simplex tableau. 
A. x, y, u = 0, x = 23, v = 12, M = 15 B. x, y, u = 0, z = 23, v = 12, M = 15 C. x, y, u = 0, z = 12, v = 23, M = 15 D. x, y, z = 0, u = 23, v = 12, M = 15
Determine whether the relation defines y as a function of x. Give the domain.y = 
A. Not a function; domain: (-?, -18) ? (-18, 0) B. Not a function; domain: (-?, ?) C. Function; domain: (-18, 18) D. Function; domain: (-?, -18) ? (-18, ?)