Use a double-angle identity to find the exact value of the expression.
A. 
B. 
C. 
D. 
Answer: A
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Solve the problem by setting up and solving a system of two linear equations in two variables. Use either the elimination-by-addition or the substitution method to solve the system.Suppose that a certain motel rents double rooms at $34 per day and single rooms at $26 per day. If a total of 42 rooms was rented one day for $1,252, how many of single rooms were rented?
A. 27 rooms B. 20 rooms C. 22 rooms D. 42 rooms. E. none of these
Construct a stem and leaf display for given data.The numbers of attendees at an annual convention, for each of the last 20 years, are given below. Use a double-stem display.
A. 
B. 
C. 
D. 
Graph the function by starting with the graph of the basic function and then using the techniques of shifting, compressing, stretching, and/or reflecting.f(x) = x2 + 3
A. 
B. 
C. 
D. 
Graph.y = x3 - 1
A. 
B. 
C. 
D. 