Solve the problem.The time required for workers to produce each unit of a product decreases as the workers become more familiar with the production procedure. It is determined that the function for the learning process is 
where T(x) is the time, in hours, required to produce the xth unit. Find the time required for a new worker to produce units 10 through 16.
A. 32.83 hr
B. -3.86 hr
C. 12.14 hr
D. 30.83 hr
Answer: C
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Perform the indicated operation. Simplify the result if possible.6 yd 2 ft + 3 yd 1 ft
A. 9 yd B. 10 yd C. 3 yd 1 ft D. 9 yd 2 ft
Use Cramer's rule to solve the system of equations. If D = 0, use another method to determine the solution set. x - 3y = 21-3x - 4y = 15
A. Cramer's rule does not apply since D = 0; ? B. {(2, -5)} C. {(3, -6)} D. {(-3, -5)}
Provide an appropriate response.A store sells two types of calculators. In order to cover overhead, it must sell at least 40 calculators total per week, and in order to satisfy distribution requirements, it must sell at least twice as many of type II as type I. Write a system of inequalities to describe the situation. Let x be the number of type I that it sells in a week and y be the number of type II that it sells in a week. Find the region described by the system of linear inequalities.
What will be an ideal response?
Evaluate as instructed.Use 
and 
to evaluate 
A. 0 B. -9 C. 4 D. 10